Disclosure: This content does not constitute medical advice. Talk to a licensed clinician (ideally a urologist) before using any penile traction device, especially if you have Peyronie’s disease, penile pain, numbness, erectile dysfunction, recent surgery, open sores/lesions, or you take blood thinners. We are reader-supported and may earn a commission if you purchase through links on this page, at no extra cost to you. This helps keep our content free. Thank you for your support.
Your penis size is probably perfectly normal, but for those that are truly dealing with below-average numbers down there, there is hope! Penis extenders, also known as penile traction devices, have been medically used to treat all sorts of penile conditions for decades, including both Micropenis Syndrome and Peyronie’s Disease.
- Vacuum bell comfort (belt-wear)
- Discreet under clothing
- Strong brand reputation
- Strap-based rod system
- Lower cost, simple parts
- Long track record
- Strap-based rod system
- Accessory kits available
- Established maker
See a urologist first if you have rapid-onset curvature, painful erections, erectile dysfunction, open lesions/ulcers, or hourglass deformity.
We’ll delve into the clinical studies supporting the use of such traction devices later in this article. First, let’s give you a global overview of our top-ranked penile extenders and traction devices on the market today…
Regulatory note: “FDA registration” is a manufacturer listing and does not equal FDA “clearance” or “approval.” Language around certification varies by region; always check the latest regulatory status on the manufacturer’s site.
Detailed Comparison: Top 10 Extenders
| Extender Name | Country of Origin | Type of Traction? | FDA Status | Cost | Doctors Involved in Design/Testing | Money Back Guarantee |
|---|---|---|---|---|---|---|
| #1 Phallosan Forte | Germany | Vacuum Suction | None | $399 | Dr. Michael Sohn & Dr. Clemens Tilk | 14 days |
| #2 ProExtender | USA & Canada | Traditional Silicone Band | None | $189 | N/A | 6 months |
| #3 Penimaster Pro | Germany | Vacuum Suction | None | $300 | Dr. Ruslan Petrovich and Dr. Ignacio Moncada | 30 days. |
| #4 SizeGenetics | Denmark | Traditional Silicone Band | FDA-Registered | $199 | Dr. Jorn Ege Siana, M.D. | 14 days |
| #5 Andro Penis | Spain | Traditional Silicone Band | FDA-Registered | $179 | Dr. Eduardo Gómez de Diego | 15 days |
| #6 MaleEdge | Denmark | Traditional Silicone Band | None | $200 | N/A | 9 months |
| #7 Quick Extender Pro | USA | Traditional Silicone Band (Double-Strap) | None | $179 | N/A | 6 months |
| #8 Jes Extender | Denmark | Traditional Silicone Band | None | $200 to $1,000 | N/A | N/A |
| #9 RestoreX Extender | USA | Traditional Silicone Band | None | $525 | The Mayo Clinic | N/A |
| #10 Size Doctor | USA | Traditional Silicone Band | None | $200 | N/A | N/A |
IMPORTANT NOTE: make sure you follow the instructions of the extender or traction device you plan to use. Results take time and can vary from one individual to another. Wrong use could result in permanent damage to your penis, so please follow the instructions carefully.
Clinical Studies About Penis Stretchers
Here are some conclusions from clinical studies that looked into the effectiveness of penile extenders:
- Urology Department, King Abdullah Hospital, Prince Mutaib Bin Abdulaziz Hospital, Armed Forces Hospital and others, Saudi Arabia: The current evidence suggests that PTDs [Penile Traction Devices] can be a safe and effective treatment option for men with PD to reduce penile curvature. (source)
- University of Turin, Italy: Results achieved do not seem to be inferior to surgery, making these traction devices an ideal first-line treatment option for patients seeking a penile lengthening procedure. (source)
- Mayo Clinic, USA: Significant and clinically meaningful improvements in penile curvature and length in men with Peyronie’s disease (source)
- University of Turin, Italy: In our study, the use of a penile extender device provided only minimal improvements in penile curvature but a reasonable level of patient satisfaction, probably attributable to increased penile length (source)
- Rush University Medical Center, Chicago, IL, USA: Prolonged daily external penile traction therapy is a new approach for the nonsurgical treatment of PD. Further study appears warranted given the response noted in this pilot study. (source)
- University of Tehran, Iran: Our findings supported the efficacy of the device in increasing penile length. Our result also suggested the possibility of glans penis girth enhancement using a penile extender. Performing more studies is recommended. (source)
What to Consider Before Buying a Penis Extender?
- Traction System: what type of traction do you want? Most extenders use the traditional silicone band-pulling system, often referred to as the “noose/strap (glans loop)” mechanism. This involves metal rods and a silicone band that encircles and applies tension to the glans, pulling it away from the body to create that stretch effect. Alternatively, some newer devices utilize a vacuum suction cup system. This system essentially employs vacuum force to draw the glans into an enclosed cup, securing it firmly. While many users find this system more comfortable for extended wear, others see it as too complicated to set up. The choice ultimately depends on your preferences and comfort.
- Physician Involvement: Check whether the extender’s design and testing involved medical professionals, particularly doctors or urologists. Opting for an extender developed or endorsed by such experts means you’re investing in a medically vetted device, minimizing the risk of injury or premature wear and tear.
- Glans Sensitivity: do you want to enhance your glans’ sensitivity? If yes, consider extenders that encase the entire glans, such as the Phallosan Forte or the Penimaster Pro. These devices employ a unique vacuum system to draw the glans into a cup, shielding it from friction. Users have reported a notable increase in sensitivity after consistent use of these devices. However, if heightened sensitivity is not your objective or if you struggle with premature ejaculation, avoid extenders that use vacuum-suction and go with traditional silicone rod ones.
- Money-Back Guarantee: Finally, check if the extender offers a money-back guarantee. This could come in handy if you find the device uncomfortable or if it fails to achieve the desired results.
Please note that the effectiveness and suitability of a penis extender can vary among individuals, so it’s essential to speak to your doctor or urologist to make an informed decision based on your unique preferences and goals.
Our Top 5 Penis Extenders (+ Reviews)
#1 – Phallosan Forte (Best Overall)

- URL: www.phallosan.com
- Country of Origin: Germany
- Extension Mechanism: Vacuum Suction
- FDA Status: None
- Price: $399
- Doctors Involved: Dr. Michael Sohn & Dr. Clemens Tilk
- Money-Back Guarantee: 14 days
Phallosan Forte Review:
- Pros:
- High-End German Engineering
- Pain-Free Vacuum Suction System
- Doctors Involved in Design
- FDA-Registered (Note: FDA registration ≠ FDA clearance/approval)
- Cons:
- Not Cheap
The Phallosan Forte is the Rolls Royce of penile extenders, and the price tag supports that statement as you may have noticed.
For those that can afford it, it’s definitely the most well-designed penis extender by far. German engineering at its finest!
This penis stretcher is also the most comfortable to wear due to its unique suction system. No other extender or traction device has such a comfortable traction system, which is why we ranked it first. Read our Phallosan Forte review to learn more about this extender. If you want a third party review, check out this review by Dr. Immad, a urologist.
#2 – ProExtender (Best Budget-Friendly)

- URL: www.proextender.com
- Country of Origin: Canada & USA (by Leading Edge Health inc)
- Extension Mechanism: Traditional Noose/Strap (Glans Loop) (Silicone Band)
- FDA Status: FDA-Registered (Note: FDA registration ≠ FDA clearance/approval)
- Price: $189
- Doctors Involved: None
- Money-Back Guarantee: 6 months
ProExtender Review:
Pros:
- Very Affordable
- Over 565,000 devices sold worldwide according to the company’s website
- The company behind it has an A+ BBB Rating (Leading Edge)
Cons:
- No doctor backing
- Traditional silicone band-pulling system, may not be as comfortable as the Phallosan’s Vacuum-suction
ProExtender is one of the oldest and most popular extenders in the world. It was developed in Canada by Leading Edge Health, a 20-year-old company that has maintained an A+ rating on the BBB. What’s impressive about this traction device is the sheer number of buyers… over half a million units sold worldwide! Learn more by reading our Pro Extender review.
Keep in mind that this is a no-frills very basic extender, but it seems like it does the job. If you don’t mind the traditional suction and want a basic extender to get started with, ProExtender may be your best option.
#3 – Penimaster Pro

- URL: www.penimasterpro.com
- Country of Origin: Germany
- Extension Mechanism: Vacuum Suction
- FDA Status: None
- Price: $300
- Doctors Involved: Dr. Ruslan Petrovich and Dr. Ignacio Moncada.
- Money-Back Guarantee: 30 days
Penimaster Pro Review:
Pros:
- High-End German Engineering
- Pain-Free Vacuum Suction
- Doctors Involved in Design
Cons:
- Not Cheap
- A bit more complex to assemble
The Penimaster is another German masterpiece in the world of penile traction devices. Similar to the Phallosan Forte, but a bit more complex to assemble due to having more moving parts. This is still a very high-quality penis traction device that has a similar suction system to the Phallosan Forte and is very well-designed. More comfortable to wear than any other silicone-band traction model. Read our full Penimaster review to learn more.
#4 – Andro Penis

- URL: www.andropenis.com
- Country of Origin: Spain
- Extension Mechanism: Traditional Noose/Strap (Glans Loop) (Silicone Band)
- FDA Status: FDA-Registered (Note: FDA registration ≠ FDA clearance/approval)
- Price: $179
- Doctors Involved: Dr. Paolo Gontero
- Money-Back Guarantee: 15 days
Andro Penis Review
Pros:
- Easy to use
- Affordable Price
- FDA-Registered (see here) (Note: FDA registration ≠ FDA clearance/approval)
- Developed by Dr Paolo Gontero from the University of Turin in Italy
- Good reviews across the board
Cons:
- Traditional Suction may not be as comfortable as Vacuum-suction
Medically-developed device, by Dr. Eduardo Gómez de Diego. Clinically tested to deliver results. This is yet another basic silicone band traction device that does the job! If you don’t mind the traditional noose/strap (glans loop) system, this is a great extender to buy. Read our full Andropenis review to learn more.
#5 – Size Genetics

- URL: www.sizegenetics.com
- Country of Origin: Denmark
- Extension Mechanism: Traditional Noose/Strap (Glans Loop) (Silicone Band)
- FDA Status: FDA-Registered (Note: FDA registration ≠ FDA clearance/approval
- Price: $299
- Doctors Involved: None
- Money-Back Guarantee: 14 days
Size Genetics Review:
Pros:
- FDA-Registered (Note: FDA registration ≠ FDA clearance/approval
- 12 Doctors involved in testing this device
- Best Money-back Guarantee (9 months)
- Developed by Dana Medic, a company that has been designing penile extenders for decades.
Cons:
- A bit expensive for a traditional-suction extender (as compared to ProExtender or Quick Extender Pro who us the same traditional traction system)
- Traditional Suction may not be as comfortable as Vacuum-suction
If you’re looking for a simple extender to test the waters with, Size Genetics may just be your best bet! Amongst all the traditional-traction extenders we reviewed, this one takes the crown! Very well-made by an experienced Danish company.
If you don’t mind using silicone bands, you won’t be disappointed with this one. Besides, many users actually PREFER traditional suction over vacuum suction, due to the ease of wear and the fact that you don’t need to use any lubricants or liquids.
How to Choose the Right Traction Device
- Your goal: Peyronie’s curvature vs. cosmetic length. Curvature usually benefits from shorter, consistent daily sessions; cosmetic aims often require longer total wear over months. Keep in mind that results aren’t guaranteed.
- Time tolerance: Prefer 30–90 min/day? Look for designs suited to shorter daily sessions. Comfortable with multi-hour wear? Belt or rod systems can work.
- Skin & glans sensitivity: Sensitive skin or uncircumcised? Vacuum bell systems may be gentler; strap loops can create friction if tension is too high.
- Discretion: Want under-clothing wear? Belt systems (vacuum bell) are often easier to conceal than rod frames.
Conclusion
There you have it, guys. This article covered the topic of penile extension in depth. It’s now up to you to determine if this is the right path for you.
| Best Extender Overall: | Phallosan Forte – Most Comfortable (Vacuum Suction) – German Engineering – Documented Results |
| Best Budget-Friendly Extender: | Pro Extender – Over 565,000 Units Sold – Most Affordable Price – Documented Results |
The Phallosan Forte stands out as ranking #1 across the board, due to its hyper-comfortable vacuum cup traction system.
The Danish SizeGenetics Extender and Canadian-made ProExtender are also two great budget-friendly options for those who don’t mind using the traditional silicone band traction system.
As we said earlier in this article, your penis size is most likely normal. Multiple studies have shown that the majority of men who seek penis enlargement strategies have normal-sized penises and are most likely dealing with performance anxiety, small penis syndrome or other mental health conditions.
FAQs
Are penile traction devices safe?
How long should I wear an extender each day?
How long until I see results?
Which device type is best: strap/noose or vacuum bell/cup?
Can traction help with Peyronie’s disease?
What are common side effects or risks?
How do I measure progress accurately?
Who should avoid or delay using a traction device?
Does “FDA-registered” mean a device is FDA-approved?
Can a traction device replace surgery?
That said, extenders and traction devices such as the ones reviewed in this article may offer a glimmer of hope for those that want to increase the size of their penis naturally without the need for surgery.

