FDA Cleared Medical Device – SizeGenetics™ is a FDA Cleared Medical Device

SizeGenetics Guarantee - A Bigger Penis Or Your Money Back

SizeGenetics™ removes all the risk from buying a penis enlargement device. The method behind our devices has been clinically tested and proven to work, so you can purchase with full confidence that SizeGenetics™ will extend your penis safely and effectively. Read more about our method here. Our double money back guarantee promises that your SizeGenetics™ will work for you or we’ll refund you your full purchase price. You’ve got nothing to lose, and everything to gain!


  • Your safety – Our penis extenders have been clinically tested and have been certified as a medical type one device. Use SizeGenetics™ as instructed and you should never experience an injury.
  • High quality – Don’t settle for a cheaper, inferior device that can at best, break during use and cost you a small fortune in spare parts, or at worst, seriously injure your penis. SizeGenetics™ is manufactured to the highest standards using the finest quality materials, and every single device must pass our strict quality testing before it is allowed to be sold.
  • Penis Extension – We firmly believe that SizeGenetics™ is the most effective penis extender device available on the market. We are backed by clinical testing, doctor endorsements, years of research and real user testimonials, proving that it can work for everyone, including you!
You’ll find our double money back guarantee really simple, because we believe 100% that SizeGenetics™ will work for you. Simply use your SizeGenetics™ device for 120 consecutive days (4 months). In the highly unlikely event that you don’t see any increase in the size of your penis (or improvement in the curvature of your penis if using the device to treat peyronie’s/bent penis syndrome), get in touch with us within 6 months of receiving your device to request your refund. Why do you need to use your device for 4 months? While many of our customers begin to see gains within the very first few weeks, the speed of results varies from person to person. By using the SizeGenetics™ device daily for 4 months, you’ll be allowing sufficient time for the device to work for you. To qualify for a refund, we will need to see the following documentation as evidence that you have used your SizeGenetics™ device in accordance with the instructions: A before photograph and an after photograph of your penis next to a measuring device such as a tape measure or ruler (you must be wearing your SizeGenetics™ device in each photo, and the average traction of the device must be visible). A diary/log detailing the days and the number of hours you have used your SizeGenetics™ device throughout the four months, including the amount of traction used each time. To qualify for a refund you must have used the device for at least 5 hours daily, at a minimum of 1200g traction, for at least 4 months. To request your refund, simply email your request along with the above supporting documents to support@sizegenetics.com. Please note: Every SizeGenetics™ device is disinfected and delivered to you in a sealed plastic bag. Once this bag is opened, your device cannot be returned or refunded unless you are requesting a refund under our money back guarantee terms above. Choosing SizeGenetics™ is risk free – we guarantee you will extend your penis length (quickly and safely) or we’ll give you double your money back!

SizeGenetics™ Doctor's Endorsements

Dr. Jorn Siana
Specialist in General and Plastic Surgery.
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Dr. Finn Knudsen
Specialist in Plastic Surgery.
Read More

Copyright © 2020. All Rights Reserved. SizeGenetics™ is owned and operated by DanaMedic ApS:
DanaMedic ApS, VAT 12508670, Maglebjergvej 4, 2800 Kgs. Lyngby, Denmark
Our business hours are weekdays, 8 AM to 4 PM (CET)

Phone, USA & Canada: +1 646 918 1447
Phone, EU & International:
 +44 115 769 0209
Phone, Denmark:
 +45 45 200 300

SizeGenetics™ is a certified medical class one urology product with safety and efficacy assessed under Medical Device Directive 93/42/EEC in Europe, full CE markings for health and safety, and Status Cleared by the U.S. Food & Drug Administration agency, FDA. Always read the product directions before use. As with other products, seek professional advice before use, and consult your doctor if you have an underlying medical condition or are taking medication.

SizeGenetics.com contains testimonials that are all results achieved by real users, some may be edited for clarity. Claims for top selling device and number of years the device has been available on the market are based on DanaMedic Aps sales. “Most powerful” claims are based on the device tension of 2800 grams and the fact that after a review of the market there are no other clinically proven devices with this tension. Comfort claims are based on the fact, that after performing a review on the market it is clear there is no device with the flexibility of SizeGenetics™.