The wearable device that
permanently increases size - no pills, no surgery.

How traction therapy creates permanent results. Thirty years of clinical refinement. Explained simply.

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Top Men'sHealth Product

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Best PenisExtender

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Increase Penile GirthSize Permanently

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Best Penis Extender: No Surgery,No Pain, Only A Larger Penis

What it actually does

One Device. Three Real Outcomes.

Same simple idea — steady, gentle pulling over time — used three ways. Pick the goal that matters to you.

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Bigger Size

Even, all-day traction encourages new tissue to grow along the length and girth. Most men notice the first change between day 30 and day 60.

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Straighter (Peyronie's)

A bend is usually caused by tight scar tissue. Targeted traction gently remodels it over time so things straighten out — no surgery, no injections.

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Stronger Erections

Traction boosts blood flow and chamber capacity. Over time, that means fuller, firmer, more reliable erections alongside your other gains.

The simple science

Your body grows new tissue when you pull on it - gently.

It's the same principle doctors already use in limb lengthening, skin expansion before surgery, and braces that move teeth. Steady tension tells your body to build more tissue in that direction.

When you wear SizeGenetics, it applies a light, measured pull. Your body reads that as a signal to adapt - cells divide and multiply. Over weeks, that becomes new, permanent tissue.

This is real growth, not a temporary stretch. It doesn't reverse when the device comes off.

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Why traction

Pills can't. Surgery is risky.Traction is proven.

It's the only non-surgical, non-drug method with published clinical evidence of real,structural, permanent change.

Approach

How it works

Permanent?

Risk

Pills & creams

Blood flow / hormonesonly

No

Low

Surgery

Physical modification ·$5k–$15k+

Yes

High

SizeGenetics

Real tissue growththrough traction

Yes

None*

*When used as directed. Cost figures for surgery are typical published ranges.

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Discreet

Wear it under your clothes. Get onwith your day.

The device is designed to be hidden and comfortable. Most men fitit in the morning and forget it's there. No clinic visits, no downtime it works while you live your normal life.

Comfort first

Start gentle. Build up slowly. Neverpush through pain.

You begin on the lowest setting  a light pull, never sharp. You addtension gradually over the first couple of weeks, only when it feelseasy. Consistency beats intensity every single time.

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Proof over time

Track every session and watch itadd up.

Log your wear time and tension each day. Small, steady sessionscompound into visible, measurable change  and the log keepsyou honest so you actually get there.

Getting started

Comfortably wearing it in about 15 minutes.

Five steps, in order, on your first session. After a few days it takes under two minutes.

1

Check your kit

Lay out the base unit,straps, tension screw,extension bars and sizingguide. Match it to thechecklist.

2

Find your size

Use the sizing guide topick the right comfortring. This one stepdecides your comfort —don't skip it.

3

Attach it

Secure the comfort ring atthe base and connect theextension bars, followingthe illustrated guide.

4

Set low tension

Start on the lowestsetting. You want a gentlepull — never a sharp one.Build up over your firsttwo weeks.

5

Wear & log

Fit it under your clothes,carry on with your day,and note your wear timeafter each session.

Never wear it while sleeping, during intense exercise, or during sex. Feel anything sharp? Take it off straight away.

Your week-by-week plan

Ease in. The gains come from showing up.

Guideline targets, not strict rules. Always listen to your body and ease off if a session feels uncomfortable.

WEEK 1

1–2 hrs

Lowest tension

Comfort only. No results expected yet - just get used to it.

WEEKS 2–4

3–4 hrs

Low tension

Build wear time. Add small tension when it feels easy.

MONTHS 2–3

5–6 hrs

Moderate

Split across morning & evening. First visible changes appear.

MONTHS 4–6

6–8 hrs

Working level

Most significant results. Fit it intoyour routine naturally.

SEE IT IN ACTION

Watch How It Works

See our product in action. This quick walkthrough shows you exactly how easy it is to get started, track your progress, and achieve real results.

Real Customer Reviews

Consistency Pays Off

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Real results just have to put the work in...also because the extender is made with great material, it also allows you to comfortably wear for longer than other extender

-Milton Cummings   ✔

Outstanding Comfort

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I’ve tried several extenders, but this one truly stands out. It is exceptionally comfortable and effective, and I can wear it for extended periods without discomfort.

-Eric Farrel   ✔

Results Speak for Themselves

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This device works if you use it consistently. The design is comfortable, and the improvements are gradual but noticeable.

-Alex Redden   ✔

Practical and Effective

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

-Jack Palumbo   ✔

Delivers What It Promises

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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.

-Scott Smith   ✔

Thoughtfully Designed

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

-Jasper Hardy   ✔

Comfortable and Reliable

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I’ve tried other extenders, but none compare to this. The design allows for extended wear without discomfort, and the materials feel premium.

-James Neal   ✔

Exceptional Product

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The team is responsive and helpful, and the product is excellent quality. After a few months of regular use, I’ve seen results that exceeded my expectations.

-Earl Williams   ✔

Start today

Real results, or your money back.

Follow the recommended plan for six months. If you don't see results, we'll refund you. That's how confident 30 years of data makes us.

6-month money-back guarantee · Free discreet shipping

Frequently Asked Questions

Does SizeGenetics actually 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 penile shaft 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 the penis.

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 penile tissue cells within the penis. 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 penis 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 penis 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 penis go back to its original size?

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

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