Increase the size of your manhood, naturally….

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Real Customer Reviews

Eric Farrel

Outstanding Comfort and Performance I’ve tried several extenders, but this one truly stands out. It's exceptionally comfortable and highly effective—I can wear it for extended periods without any discomfort

Alex Redden

Results Speak for Themselves If you’re on the fence, take the leap! This device works if you use it consistently. The design is comfortable, and the improvements are gradual but noticeable

Daniel Mosley

An Investment in Confidence This isn’t just about the physical changes—it’s also about how you feel. My confidence has improved so much, and I’m beyond happy with the progress.

Jack Palumbo

Practical and Effective I appreciate how easy this is to incorporate into my routine. It’s comfortable, discreet, and well-designed. Definitely a great choice for anyone looking for real results

Chad Villarreal

A Long-Term Solution Unlike other extenders I’ve tried, this one remains comfortable over time. The results keep improving, making it a great long-term investment.

Scott Smith

Delivers What It Promises I was looking for something comfortable and effective, and this exceeded my expectations. The gradual progress is visible, and I’m excited for even more results

Vernon Walsh

Fits Seamlessly into Daily Life I love that I can wear this discreetly under my clothes without it being noticeable. It’s a well-thought-out design that actually works. One of the best purchases I’ve made

Nescience

Very solid company The company is very professional. Everything was shipped and handled perfectly. I had an issue with the device and support was quick to assess the problem and send me new parts. Can't speak to results yet, as it's only been a few weeks, but everything is going according to plan so far!

Greg Palmer

Takes Patience, But Delivers I’ve been using this for a while, and I can say it works! It takes patience and daily commitment, but the changes are noticeable. If you’re looking for something effective, this is it

Joseph McAtee

A Smart Investment After trying different extenders, I can confidently say this is the best. The ergonomic design makes it comfortable, and the gradual improvements are worth the wait

Kevin Hughes

Real, Measurable Progress If you’re wondering whether this works—yes, it does! It takes time and consistency, but the improvements are undeniable. Just be patient, and you’ll see results.

Brian Lopez

Better Than Expected! I wasn’t sure what to expect, but this exceeded my hopes. The comfort level is excellent, and the results are impressive. I’ve tried other extenders, but this one truly works.

Jimmy Mooney

Built to Last The craftsmanship of SizeGenetics is outstanding. It’s durable, comfortable, and delivers results. Unlike other extenders I’ve tried, this one stays in place securely. Highly recommend!

Jasper Hardy

Thoughtfully Designed SizeGenetics is one of the best purchases I’ve made. The design is well thought out, and the comfort level is unmatched. The fit is adjustable, making it easy to wear for long hours.

Ronald Strickland

Worth the Commitment At first, I was unsure about committing to daily use. but I'm so glad I did. The progress is steady, and the device is so well-made that I barely notice I'm wearing it. Great investment.

Randy Grimm

Safe, Comfortable, and Effective Unlike other extenders, this one doesn't cause irritation or discomfort. I was impressed with how secure and easy to wear it is. The results are promising and I highly recommend it!

William Button

A Confidence Booster! I never though I'd see such positive changes. This device is easy to use, doesn't cause discomfort, and delivers on its promises. I feel more confident and am thrilled with my progress.

Mike P

It definitely works, but be patient and consistent to see results I’ve been using it for about six months and gained around one inch so far, wearing it 5-6 days a week for around 3-5 hours a day. I keep track of my hours and measurements in a spreadsheet (so far 400 hours in) and take photos of measurements to remind myself how much progress I’ve made. The size increase is definitely noticeable and has been a boost to my confidence. I’ve seen some increase in girth too. It also makes you harder and for longer since it stimulates blood flow, so in that sense I plan to continue using it even after reaching my length goal. I wish I discovered the device years ago. The device itself is very well-made with good quality material as I haven’t had any issues with it or parts failing, etc. It still looks brand new even after a lot of use. It’s comfortable to wear too but takes some getting used to at first with putting it on and securing a good grip (a bit of talc powder helps too). I find it's best to wear if you're laying down. I’ve also been impressed with the customer support I’ve received, having had to email a few times along the way with questions and asking for advice, and they always reply promptly and helpfully. The same person replies to my emails, so it’s nice having consistency since they are familiar with me as a customer. My advice/tips for new users - follow the start-up programme, be patient and consistent, clean the device daily, keep track of your hours and take regular measurements. I use the silicone tube as a strap and find that every few months or so I need to order a new one since it will lose its tightness overtime due to stretching, but it’s inexpensive to buy.

Odis Watson

Great for Long-Term Use I was hesitant about daily wear, but SizeGenetics makes it easy. It's discreet, comfortable, and delivers gradual but noticeable results. Consistency is key, and I'm excited to see my full progress!

E Arrington

Growth The continuous growth is amazing, im glad their device is comfortable and simple to use. Very glad I invested and hoping to reach greater heights ! If you skeptical just ACTUALLY try it and give it time.

James Neal

Comfortable and Reliable I’ve tried other extenders, but none compare to this. The design allows for extended wear without discomfort, and the materials feel premium. I’m already seeing results, and I couldn’t be happier.

Patrizio Longo

Great results with consistent use – Highly recommended I've been using SizeGenetics since November, and I can confidently say that it delivers results when used consistently. Over the past few months, I've noticed an increase of about 1 cm in length, and even my girth seems to have improved. The device itself is well-made, and while it takes some time to adjust to wearing it comfortably, the results make it worth the effort. Overall, if you're patient and committed, SizeGenetics can definitely help you achieve noticeable improvements.

Craig Johnson - Customer

To Those Who Are Serious About Growth, My journey with size genetics started a few years ago after I had recovered from a minor surgery where I was put to sleep, and the surgeon attempted to catheterize me and couldn’t get the Catheter in because of stricture. He used a surgical rod to open the passageway through my penis and unknowingly tore up my Urethra, causing severe scar tissue. After months of healing and contraction of inner tissue, I had lost almost half of an inch in penis length. A urologist friend recommended the Size Genetics device to me. After using the device for several months, not in a very disciplined manner, I had barely gained back 3/8 of an inch. I decided to do a comprehensive study of penis scar tissue healing and enlargement. The first thing that I did after thorough research was put together a disciplined plan. I learned from a sports surgeon friend that you must give the body the proper tools to heal and grow. I use the device an average of 4 ½ hours daily, sometimes 5 hours. After stretching, I take 1,000 mg (2 capsules) of “Mother Nature” CAMU CAMU vitamin C from organic fruit. I take three capsules of COSOSAMIN ASU Joint Health (promotes ligament healing and growth) and 1 Nature Made Multi. I drink a protein shake of at least 35 to 40 grams made with Ancient Nutrition Multi Collagen Protein. I started the planned aggressive program the first week in December, and I have grown in length a little over one-half of an inch. When used properly and with the right nutrition, the device works. I couldn’t be more pleased. Craig Johnson Columbus, GA.

Thomas Webster

Worth Every Penny! After months of research, I finally chose SizeGenetics, and I'm so glad I did! It's safe effective, and easy to use. The confidence boost alone makes it worth it. If you're on the fence, I say go for it!

Randall Donaldson

Unbelievable Results! I was skeptical at first, but after using SizeGenetics consistently, I’m blown away by the results! The device is well-made, comfortable, and delivers exactly as promised. It’s easy to use, and the gradual progress is noticeable. If you’re looking for a high-quality extender that works, this is the one!

Julian

In my experience, the Sizegenetics stretching device is comfortable, but only if you know how to make it comfortable. I am uncut, so not any other stretching device works for me; I have tried vacuum devices and those have been the worst for me because my foreskin gets in the way. With this stretcher device, I use the silicon strap and the protection pad and those work for me. In the past, I have wore this device for 400 hrs and it did elongated my penis a little bit, but when I stopped wearing the device, I lost those gains. I am wearing the device again (it's been three months) but to be honest I have not seen much gains, only a small bit.

Danijel Kučan

I like sizegenetics in general, but it is not so simple to wear it, like is demonstrated in the video, on hard dildo.I have average size of penis (around 7 inch), but is dificuld to keep it on, once penis loose all blood and become flacid, that it does eventualy, and everything that is one, get loose, so I have to constantly fix the traction, to keep the presure.Progress is much more slower, like it is avertised, but maybe depends on the person.

Mando M

The product the company offers works great for what it's intended for, takes some time getting used to but with the friendly how to video cuts the time in half. Be consistent, that is key to getting the desired results; if it seems like it's not working, keep at it, the wait is worth it. Follow instructions carefully for best results. Good luck!

Suarez

I have been dealing with Peyronie's disease for several years. I didn't want to go for surgery, I thought there must be another solution. I started looking and that's how I ended up with Sizegenetics. I was very skeptical at first about what they promised, regarding the increase in size but also about Peyronie's disease. However, I said I had to try, I had nothing to lose. The results were exceptional, from all points of view. The biggest problem was the psychological one, Peyronie's disease brings with it ED but also a decrease in size due to the decrease in the volume of blood circulating. Everything has changed since the beginning. I haven't treated Peyronie's yet but things have improved. And as for the increase in size, there is no doubt, it works. Just like it works in the case of ED.

Milos

Great product
It worked great for me!If you have strog will and commitment to go through the plan,I will highly recommended Sizegenetics!

Ollie

Excellent quality
The design and engineering of this product is excellent. I have been using it for more than one year now, and I find the silicone tube noose fit me best. One tip would be to clean the tube every day with hot water and dishwasher soap, this will result in higher friction (more grip) which again makes it more comfortable. Before I did this the tube tended to slip slightly and that was uncomfortable.

Al Cur Li

The buying and shipping experience was…
The buying and shipping experience was streamlined. The item arrived on time an was shown on site. Customer service was prompt to respond every time I have contacted them.
The results from using the stretcher are real but you have to put in the time. I have gained 1.5 cm over a little over a year period. I am a builder and can’t wear it during my working hours so I am putting in less daily time than ideal. The result are just slower than using the recommended amount.

Donald Cramer

Impressed with the results!
I was skeptical at first, but after using SizeGenetics consistently, I'm genuinely impressed with the results! Not only did I notice some extra inches, but the device is also comfortable once you get the hang of it. The quality feels premium, and it's backed by real science, which gave me more confidence in the process. I'm thrilled with my progress and would recommend it to anyone looking for a safe, effective way to enhance size. It really works!

John Mike

Reliable and Comfortable
Been using Sizegenetics for months now, and the results are clear. It's reliable, comfortable and are as they promised. Highly recommend it.

Jason Greenlee

Really Satisfied with the product
I have been using SizeGenetics for a while to help with my curved "friend", and it's really working. The device applies gentle tension to straighten things out over time, and it's surprisingly comfortable. I've seen a noticeable improvement and feel way more confident. Definitely worth a try if you're dealing with the same issue.

Anonymous

This product works exactly as advertised
I have used Sizegenetics for about 6 months. The product works great. I have had to replace the silicone tube about once per month. Consistent use has given me consistent results

Barry West

absolutely it works great i have gained 3/4 of an inch so far and im not going to stop till i hit my goal i started with a 6" in length and want to get to 8

GREG MCGINN

Highly Recommend!
I have been using this product off and on for years now. The company has always been very responsive to questions or concerns. The products are top quality and built with comfort in mind. I would definitely recommend Size Genetics to anyone who is on the fence about purchasing, this product works!

Kevin L

Products work as advertised!
I've ordered several products from Sizegenetics and they work exactly as advertised. The ordering process is simple and delivery is relatively quick and discreet. I couldn't be happier with the products I've ordered (and my partners are quite satisfied, too).

mitchell sawyer

Easy as to check out the things you need and explains everything that the item does can not recommend enough and comes to home in very good time

Patrick W.

Solid Product, Does What It Says
This is a well-made device, and it does exactly what the company claims. I've been using it for a couple of months, and while process is gradual, I've definitely seen improvement. The device itself is comfortable and easy to wear.

Ethan R.

Comfortable and Effective
Size Genetics was recommended by a friend, and I'm glad I gave it a shot. The comfort level is better than I expected, and it's built to last. The results are gradual, but they're definitely there. Great customer service, too!

Kevin T.

Outstanding Build Quality
SizeGenetics is impressive in terms of build quality. It's clear they've put a lot of thought into the design, and the materials are top-notch. I've had a good experience using it and would recommend it to anyone looking for a non-surgical option.

Matthew Tsang

The company is legit and the device really gives results!

James Green

Highly Recommended
Amazing product 100% recommend it.

James P.

Quality Product and Good Support
I was skeptical at first, but the SizeGenetics traction device has exceed my expectations. It's sturdy, and the comfort pads really make a difference during long sessions. I also had a few questions, and customer service was excellent.

Alex

Good product that actually works. I actually gained results within the first 2 weeks of using. The reason I gave 4 stars is because the product I was sent is a little stiff on the screws. I need to use a little force to expand them

Nick

Time+Effort+Discipline = Big results for my Manhood
Works great but it requires time, patience and endurance, do not expect results in less than a month. I have been using it for more than a year since April 2023 now in combination with a pump and those 2 has done wonders. It was hard to vet a grasp of it at the beginning and really weird because Hey you are venturing into the unknown... Do not forget to get your diet and sleep on point and get a lot of protein and minerals intake to help it grow stronger. I wish I had done this earlier because it give you a truly great ROI on your sex life and it is a mental boost as well. If you can grow your manhood what else can you do? Most people are making funny jokes about penis length but are not doing anything to improve it nor do they think it is possible and you get laughed at for doing so. They are those that do and make it happen and other who watch on the sidelines!

Bryan

The continuous growth is amazing, im glad their device is comfortable and simple to use. Very glad I invested and hoping to reach greater heights ! If you skeptical just ACTUALLY try it and give it time.

Nathanial Stamper

Exceeded My Expectations! I was hesitant at first but decided to try SzeGenetics after reading reviews. The device is well-designed and surprisingly comfortable for extended use. After three months, I'm seeing noticeable progress! Their customer service is also quick to respond to questions. A fantastic investment in self-confidence.

Mia Harrison

Comfortable and Effective I've tried other similar products, but SizeGentics stand out for its comfort and ease of use. I wear it daily, and the gradual progress is clear. The instructions are straightforward, and the results are worth the time and effort. Highly recommend this to anyone looking for a reliable product.

Seves

5 out of 5 ~
I was ready to see a doc about my curvature. I came across Size Genetics and I am glad I did. Patience and consistency are vital. Within 6 months use I could tell my member was straighter than it had ever been. Added bonus was that I also grew almost an inch in length and an extra inch in girth. Needless to say my wife is extremely happy with the results.

George Colon

Professional Service From the moment I placed my order, I was impressed with the professionalism of SizeGenetics. The delivery was fast and discreet, and the product itself was package securely. Their customer support is excellent, promptly answering all my queries. The device works great, and results are visible!.

Daniel Bain

Real Results That Build Confidence After months of research, I decided to give SizeGenetics a try, and I'm so glad I did. It's easy to incorporate into my routine, and I've noticed significant progress. It's a confidence booster, and the design makes it comfortable for daily use. A must-try for those seeking a real solution.

Christopher Clarance

This works. I wore the instrument 6 hrs a day the 1st year, removing it every hour to allow normal blood flow before continuing... I grew an inch the 1st year. Every year after, I have been wearing the instrument 3 hrs a day, every other day...and I have continued to grow a 1/4 inch every year...I am absolutely thrilled and I will keep growing my penis likely forever! These gains I made, are erection gains, not just soft growth and my erection has gotten thicker and stronger as well. I did not have a small penis to start, but I want a huge penis. I am 3 yrs into doing this now. I have replaced the working parts once every year and purchased the extensions as I have continued to grow and the orders have always come. When I was young I started exercising my body with the intention to grow a good looking strong phisyque and now growing my penis is just the same. Growing a good physique or your penis is very similar... consistent stimulation, good nutrition and proper time to heal in-between...and time...and you will continue to grow and change due to the stimulation...it is not magic... I am so glad to live in this time of excellent engineering...to be able to have this fun. Thank-you engineers responsible and Size Genetics for offering this affordably.

Doug

Customer service has been very professional and on point when questions came up. Shipping was prompt and easy to track. Though I am a relatively new customer, the instructional videos provided the needed information to begin this journey with confidence.

Tim Montalvo

A Game-Changer! I've been using SizeGenetics for over three months, and the results are life-changing. The device is comfortable, and I barely notice it during use. I feel more confident every day. Thank you for creating such an incredibly product that truly delivers on its promises.

Joesph Gonzalez

Superior Design and Comfort SizeGenetics is a well-designed product that focuses on both effectiveness and comfort. I can wear it for hours without any discomfort. The instructions were detailed and easy to follow. I've been consistent, and the results speak for themselves. Highly recommend it to anyone considering it.

Pasquale Richards

Built for Results This is not a gimmick-SizeGenetics is a serious, well-engineered product. I've been using it for four months now, and the improvements are noticeable. It takes commitment, but the results are well worth it. The device feels durable and is easy to clean and maintain. Very impressed!

David Smith

Fantastic Experience Overall My experience with SizeGenetics has been nothing but positive. Ordering was simple, the product arrived discreetly, and the instructions were clear. After consistent use, I've achieved results beyond my expectations. It's the best decision I've made for myself. Can't recommend it enough!

Samuel Jones

Reliable and Effective I was skeptical, but SizeGenetics has proven me wrong. The device is comfortable, and the results are gradual but very real. Their customer support team was helpful in answering setup questions, making the whole experience seamless. Definitely worth investing in if you're serious.

Frederick Santillo

Quality Product That Works The first thing I noticed about SizeGenetics is the quality of the product. It’s built to last and designed for comfort. I’ve been wearing it consistently for a few months now, and the difference is noticeable. With patience and dedication, this device truly delivers results

Jim Case

Well-Worth the Investment SizeGenetics is worth every penny. I’ve tried other options that didn’t work, but this product is the real deal. It takes some time to get used to, but the results are visible with consistent use. The build quality is top-notch, and the customer support is always there to help

Ken Savage

Size Henetics is the OG of penis enlargement! Hands down size genetics is the og of penis enlargement. My gains in length are from 5 and 3/4 inches to 8 and 1/8. Also my girth went from 5 and 1/4 to 6 and 1/2 inches. The product is very durable and fit on and off easily. Thank you Size Genetics. Ken

James

amazing product it takes time and dedication but there is no doubt it works.

Denny

One stop shop Work as advertised just be patient and relax started at 6.8in currently at 7.8in used it for 6 months (4-5 hours a day). Word of advise : don't stretch too much at once (easy does it).

Dominic Horton

I’ve been using SizeGenetics for six months, and I can confidently say it works. The product is comfortable and easy to use, and the instructions are detailed. The improvements have boosted my self-esteem significantly. I recommend this to anyone who is patient and serious about achieving results.

Samsam

2 months of use
I’ve been using SizeGenetics for about 2 months now, and I wanted to share my thoughts. So far, I’m quite satisfied with the product. It’s well-designed, comfortable to wear, and the quality of the materials feels durable. Although I’ve only been using it for a short time, I’m already starting to notice some gradual improvements, which is encouraging. The instructions were clear and easy to follow, making it simple to get started.

John Setser

Amazing Quality and Results
This product is built with quality in mind. It’s sturdy, comfortable, and effective. I’ve noticed visible improvements after consistent use, which has exceeded my expectations. It’s a product that delivers on its promises if you’re committed to the process. Truly a great investment!

Brandon Johnson

Trustworthy and Discreet
The SizeGenetics team respects their customers. My order arrived in discreet packaging, and the instructions were thorough. I’ve been using the product for a while now, and the results are incredible. This product is both effective and easy to use. Very satisfied with my purchase.

Larry Saxon

Life-Changing Product!
SizeGenetics has genuinely changed my life. The results are real and have greatly improved my confidence. It’s comfortable enough for daily use, and the process is straightforward. The company provides excellent support, making this an all-around fantastic experience. Highly recommended!

Earl Williams

Exceptional Service and Product
I can’t say enough good things about SizeGenetics. The team is responsive and helpful, and the product is of exceptional quality. After a few months of regular use, I’ve seen results that exceeded my expectations. This device works if you follow the plan and stay consistent.

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Safe, comfortable, non-surgical extension of your manhood, in the comfort of your own home really is possible. And the results are permanent!

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The Most Comfortable Extender In The World.

1) Enlargement

Tests show an average increase in erect length of 28%, and 19% in girth after 4-6 months of treatment. The treatment uses your body’s natural response to traction, and the achieved results are permanent. The principle is called “Cytokinesis” – in layman’s terms, cell multiplication. The creation of new cells sometimes does not happen in the direction of the traction, which is why you also increase girth.

2) Straightening

The traction therapy straightens your manhood. Few men have a 100% straight member, and for many, it is merely a cosmetic issue. Some have a more severe curve – also called Peyronie’s Disease – which can cause problems during intimacy. The straightening of course also adds to the length.

3) Stronger Erections

The SizeGenetics traction device not only increases penile size but also increases blood flow by as much as 120%, making it easier to achieve and maintain an erection. Also, 12-18 hours after SizeGenetics penile traction therapy, you still have increased blood flow, amplifying your arousal level.

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Comfort package

$249.95 USD ~~$399.95 USD~~

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Value edition

$199.95 USD ~~$274.95 USD~~

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Ultimate system

$299.95 USD ~~$499.95 USD~~

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Curvature home treatment edition

$299.95 USD ~~$499.95 USD~~

As Seen On

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Your Safety

SizeGenetics™ Clinically tested, certified medical device for safe your member extension.

Best Extender

Proven effective with doctor endorsements, research, and real user testimonials.

High quality

Built with top-quality materials; avoid cheap devices that risk injury or costly repairs.

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Dr. Jorn Ege Siana, M.D.

Specialist in General and Plastic Surgery

Overview: After opening 3 private practices since 1991, Dr Siana quickly built up an international reputation as an expert in the field of male surgery. It was this work that led Dr Siana to invent the SizeGenetics™ device. He is also a director and founder of the Scandinavian Clinic of Plastic Surgery in Denmark and Germany.

Medical Doctor (MD) – June 1983, School of Medicine, University of Copenhagen.

Member of American Society of Plastic & Reconstructive Surgery

Founding member of International Association of Male Surgery

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DR. FINN WORM KNUDSEN M.D.

SPECIALIST IN PLASTIC SURGERY

Overview: Since 1996 Dr. Knudsen has worked with cosmetic plastic surgery full time. Dr. Knudsen has carried out several documented international studies which has led him to become a member of the American Society of Aesthetic Plastic Surgery. Only 3 plastic surgeons enjoy the recognition of this membership.

swedish society for aesthetic plastic surgery

the swedish and danish medical association

danish society for plastic and reconstructive surgery

asaps, the american society of aesthetic plastic surgery

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Dr. Michael A. Carter, Psy.D.RCP

Doctor of Clinical Psychology

Overview: After achieving both a Masters and Doctorate qualification in Clinical Psychology, Dr. Carter has gone on to be one of the worlds leading psychologists specializing in relationships.

m.a. masters of clinical psychology

psy. d. doctorate of clinical psychology

founder of the institute of relationship

Frequently Asked Questions

How does SizeGenetics™ work?

The SizeGenetics™ device is based on age-old traction techniques that have been practiced for thousands of years to enlarge body parts. It works by applying a constant traction force along the shaft of your member to make it longer, thicker and harder. If you stretch a balloon, it becomes more supple and can hold more air. The same principle applies with your member.

Is the SizeGenetics™ device safe? What medical backing does it have?

SizeGenetics™ is a certified US medical type 1 device. Doctors have also endorsed our powerful traction device. So you can have total peace of mind that SizeGenetics™ is both medically backed and completely safe to use.

Are the results permanent?

The SizeGenetics™ system uses a constant traction force to increase the number of tissue cells within the member. This is called citokineses. This traction force multiplies the cells within the member permanently, which means any enlargement you see will be permanent.

How long will it take to see results?

Although results will vary depending on the individual and how long you wear your SizeGenetics™ device, many of our thousands of satisfied customers have seen results in just a few weeks!

How long per day do I have to wear the SizeGenetics™ device?

We recommend that you wear your SizeGenetics™ device for between 3-6 hours per day. You may want to start wearing the device for just a few hours per day before building up to 6 hours, to allow your member time to get used to being stretched. Every hour counts as the same, so wearing your device for 6 hours per day for 10 days will give you the same result as wearing it for 3 hours per day for 20 days.

Will it increase my flaccid length as well as my erect length?

Yes, you will see an increase in both your flaccid and erect member length when you use the SizeGenetics extender.

Will I keep getting results if I keep wearing SizeGenetics™?

Yes! As long as you continue wearing your SizeGenetics™ device you’ll continue to see results.

If I stop using SizeGenetics™, will my member go back to its original size?

No! Because the SizeGenetics™ device increases the number of cells within the member permanently, the results you get with SizeGenetics™ are also permanent.

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