Jes-Extender Review: The First Penis Extender Ever

jes extender box

  • The Jes-Extender is a penis extender which through phalogenic traction will increase penis size by an inch per 1000 hours of wear over 6 months.
  • The Jes-extender, hand-crafted and gifted to gentlemen in 1995 by DanaMedic, a Denmark based pioneer leading the male enhancement industry, was one of the first on the market.
  • The Jes-Extender has half a million satisfied customers and recognition from Playboy Magazine, Men’s Health, Sports Illustrated, and The Telegraph.

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Through the medium of polished branding torn directly from the gentleman’s club lounge, Jes-Extender promises, no. “Promises,” is too gentle, Jes-Extender declares, it bellows, it very nearly slaps the consumer in the face, with: use me and you will have a longer, thicker member.

Embedded in marketing are claims of the Jes-Extender as a treatment for erectile dysfunction, Peyronies, and buzz terms such as natural, safe, and medical-community-endorsed. The kind every man needs when it’s their penis potentially on the experimental block.

The questions are: How true are the claims? And, can Jes-Extender maximize your manhood?

Do Penis Extenders Really Work?

Yes. It’s not that simple, but yes.

When you place a persistent, relatively large stretch to a single tissue you cause microscopic tears within, in this case, the shaft of your penis. Existing tissue cells multiply to fill these tears and rebuild at the extended size.

The more you tear the tissue, the more tissue is built up, the more penis you have. Your penis increases in size, you increase the traction and the number of hours a day you wear it.


It may sound like an unhappy prospect but like earlobe stretching in body modification, neck elongation in Thailand and Africa, and the skin and skeletal traction used by plastic and reconstructive surgeons to encourage the body to grow additional skin, bone, muscle, and tendon, it is going to work. The body’s response to mechanical stress, in our case a penis extender, by growing new tissue, is natural.

For example, when you lift weights, you cause similar tears in muscle fiber. Muscle reacts as your penis reacts when under the mechanical stress of a penis extender, cells multiply, rebuild and you bulk up. Also like when building muscle, you can feel sore quickly whilst waiting months for visible results.

Cellular similarities to bulking are one of the strategies employed by Jes-Extender to ease men into the idea of sending their penis to the rack. Jes-Extender proposition daily extending as “just another way of taking care of your body, in the same way as going to the gym or eating healthily.” Unlike bulking at the gym, and much more like earlobe stretching, any gains in penis size are permanent.

How to Use The Jes-Extender

Jes-Extender comes already assembled. The Jes-Extender has a ring that circles the base of the penis and a rubber strap which you fasten behind the glans of your penis. If you are uncircumcised the strap can be worn on top of the foreskin, or under whichever is comfortable.

1. Two bars run parallel to the penis and can be extended up to 4 inches. Place the ring of the device against your pubic bone. The entire unit (the ring plus extender rods) should be slightly longer than your flaccid penis with a gently stretch by the extender. The rods can then be fastened at that length. The longer the length of extension rod used the greater the stretch applied.

How to use the jes extender

2. Attach the plastic front piece (which attaches to the head of your penis) by inserting the rods into the complementing slots and fasten the rubber strap around the head of your penis. You will hear a click when both pieces are secured together.

3.  By turning the hand screws inwards towards your penis you will feel the stretch on your penis increase. As you get more comfortable, the arms can be further adjusted to give more stretch.

Penis Extender Hours Per Inch

Significant results with a penis extender will take, on average, 1000 hours over six months. Achieving these results will require dedicated daily wear for 4-6 hours, though in studies by Jes-Extender, the ideal for guaranteed results is 12 hours a day.

Jes-Extender has a six week ‘Slow Start Up Schedule’ for first-time extenders which they also propose in their daughter brand The MaleEdge (2008). The schedule is designed to allow beginners to get used to wearing their penis extender.

Dr. Deane, a urologist at Rush University Medical Centre, Chicago, says: “There’s potential for risk in terms of skin issues and pain if it’s applied incorrectly. You can avoid injury altogether provided that you listen to your body very closely and immediately stop everything as soon as something feels wrong.”

Using Jes-Extender’s Slow Start Up Schedule minimizes the risk of over-straining tissues and allows the body time to adapt.

Jes-Extender Slow Start Up Schedule  
1 & 2800-1200g / 28-42oz1-2
3 & 41200g / 42oz3-4
5 & 61200-2000g / 42-71oz5-6

5-6 hours daily for the first 2-3 months gives a 10% increase in erect length. 4-6 months can give an average of 28% increases in erect length and 19% in girth. After six months if you want further penis gains you must up the number of hours per day you wear Jes-Extender and the traction force further. If you don’t move around in your sleep, it’s possible to wear Jes-Extender overnight.

Dr. Deane notes: “Penis extenders can be uncomfortable, and it requires wearing it for several hours a day, we’re talking four to six hours. That’s a long time.”

Experienced extenders find they’re only bearable if standing up and difficult to wear with most clothes. Penis extenders also don’t easily move with the body making simple actions that require only minor flexibility extremely uncomfortable.

Jes-Extender claims there is no upper bar or maximum gains and results will continue with repeated use until you’re wrapping your Johnson down your left trouser leg. Dr. Leslie Deane disagrees: “There is evidence that penis extenders result in an increase in length and girth, but it’s not going to get a person who is four inches to seven inches.”

Jes-Extender, nor other brands whose reputation pivots on evidence, does not offer clinical studies beyond the 6-month mark. Users rarely go beyond increases of a couple of inches with some men finding penis extenders only produced increases in flaccid penis size as opposed to erection length.

Bear in mind if your aim is to whip out for the bedroom the kind of monster which would have a stallion blushing: larger erect penises take greater effort to erect in one’s golden years.

The Jes-Extender

Jes-Extender is a class 1 medical device made of lightweight, hypoallergenic, medical-grade materials. The Jes Extender has the CE mark meaning it meets EU safety, health, and environmental standards, and is compliant with EU legislation. For all packages, Jes-Extender has a doctor on call to assist you in any way.

Jes-Extender offers five packages: Light, Original, Titanium, Gold, and Platinum. All three packages include the same device coated in different materials including 24-carat gold and pure platinum. Other differences between packages include the accessories included and the warranty which varies from 1 year to lifetime for Platinum.

The Jes-Extender Light

Jes extender light

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Their entry package can be used on penis sizes up 6.7 inches erect. The Jes-Extender Light comes with 1 base unit,1 dual-function front piece, 1 silicon tube, 1 comfort strap, 1 protection pad, 2 1-inch elongation bars, 2 2-inch elongation bars, 1 Jes-Extender QuickGuide and a 1 Year Warranty.

All Jes-Extender packages come with a money-back guarantee that you will increase in size. To be eligible for that guarantee you need to enter your statistics and progress into a permanent-growth registration sheet once a week every month for a maximum of 9 months. Guarantee upkeep also includes taking before and after pictures, pictures strapped in to make sure you’re using it correctly, and pictures with a ruler.

In other words, to be eligible for the warranty you are going to have to blog more than I did at the early stages of my career. They also ask if for whatever reason your internet goes down to kindly contact them, presumably, by phone.

The Jes-Extender Original

Jes Extender Original

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Jes-Extender’s best-selling product, because having your components coated in gold, or platinum could be considered a little extra.

The full package includes everything in the Light version with 2 extra 2-inch elongation bars, a stylish mahogany case, and a 2-year warranty. The Jes-Extender Original is suitable for penis sizes up to 9.1 inches.

The Jes-Extender Titanium

Jes Extender Titanium

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The Jes-Extender Titanium comes in an aluminum case, an extra set of ½ inch elongation bars for greater precision in traction, a 2-year warranty and is suitable for penis sizes up to 9.1 inches.

The half-inch elongation bars retail at $12 each, giving a saving of $4 compared to purchasing the Jes-Extender Original plus additional elongation bars.

The Jes-Extender Gold

Jes Extender Gold

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The Jes-Extender Gold, as the name would suggest, is made from 24-carat gold. This package includes all the same accessories as the Jes-Extender Titanium with the addition of a custom velcro strap. The custom velcro strap retails at $52.

There was at the time of my research some confusion on the official USA site for Jes-Extender as to whether the product came with a 2-year warranty or a 5-year warranty.

Jes Extender warranty

The description of the warranty on is in itself confusing with the site stating their products come with different warranties depending on the package, the return process and then: “Due to the intimate nature of our product, and thus the strict hygienic standards, we cannot refund a used product. This is clearly stated on the sealed bag stating the product cannot be returned when this bag is opened.”

This was confusing to me because a 1-year, 2-year, 5-year and lifetime warranty is only any use to the consumer if it is valid for a product which has been used. Unless of course said consumer is a collector of male enhancement memorabilia and said product spontaneously breaks on-shelf.

After an hour-long struggle on chat whereby my conversation was dismissed due to the customer service representative (or bot depending on your level of cynicism) unable to give me an answer to my actual question and then needing to “Take a call,” thereby abruptly ending my conversation, I managed to confirm that the Jes-Extender Gold comes with a 5-year warranty.

This is relevant because one of the things Jes-Extender exclaims you to be paying for is 24/7 customer service.

Jes Extender Customer Service

I would certainly recommend email as within 12 hours of emailing regarding my confusion over product warranty I received the following:

the Jes Extender Warranty

Jes-Extender Platinum

Jes Extender Platinum

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The Jes-Extender Platinum package includes a Jes Extender coated in pure platinum, a certificate for verification for the aforementioned platinum,  all the accessories, and features as the Jes-Extender Gold plus a *lifetime warranty and 1 No-Slip Protech, a kind of glove that wraps around the penis glans beneath the penis extender rubber strap and adds protection, friction, reduces slipping and retails at $12.

*The same inconsistency in warranty exists on the Jes-Extender Platinum with the description listing the warranty for the Jes-Extender Platinum as both 2-year and lifetime.

Jes Extender product description

I can speculate as to a number of innocent reasons as to why this has happened in two separate product listings. However, as you are paying a considerable amount of money for the Jes-Extender Platinum and their email response to me I would consider vague, I would recommend calling Jes-Extender directly before purchase.

As of the 25th March 2020, Jes-Extender offers free shipping on all orders over $100 to Europe, the USA, and Canada with orders received before noon (CET) on weekdays shipped the same day.

A Treatment for Peyronie’s Disease

Peyronie’s disease causes a bend in the penis shaft caused by fibrous plaque growth as a result of trauma, fracture, and internal bleeding in the penis. 9% of men suffer from Peyronies with some men inheriting a genetic vulnerability. Symptoms include pain during sex, erectile dysfunction, and penile shortening.

Mechanical traction on the penis by penis extenders can be beneficial in straightening fibrotic plaque deposits. In a study by DanaMedic 26 males, treated during a 6 month period found plaque deposits disappeared in 7 cases (26.9%) and a decrease in the number, size, and consistency of plaque in 18 cases (69.2%).

Jes Extender and Peyronies

Jes-Extender suggests their penis extender to be a treatment for erectile dysfunction which is a common consequence of Peyronies. They claim this is down to increased cell activity and blood flow. 11 patients of the above study noted a lack of sensitivity and 21 presented with erectile dysfunction. Post-treatment 13 (61.9%) patients recovered their erectile function and 10 (38.5%) recovered penis sensitivity.

Do Penis Extenders Increase Size?

The British Journal of Urology International (BJUI) conducted a 2015 study on penis enlargement. The authors of the study concluded: “penile extenders…can produce an effective and durable lengthening of the penis, in both the flaccid and erect states.”

They further concluded penis extenders as the only evidence-based technique of penile elongation. In another study of 15 men using a penis extender for 6 months an average increase of 0.9 inches in flaccid length was found. The authors concluded: “Penile extenders are a minimally invasive and effective treatment to elongate the penile shaft.”

Along with testimonials, Jes Extender obtains data from their customers using their penis extender and self-reporting in their online diary. Jes Extender analyzed this data and self-taken before and after pictures from customers to demonstrate the relationship between penis length and the number of hours wearing the Jes Extender.

jes extender results chart

All patients experienced an increase in penis length averaging 0.05 inches per week with no complications.

Note that the above studies, with the exception of the customers’ self-reported data by Jes-Extender, used very small sample sizes and, funded by Jes-Extender and similar brands, may include selection bias, where researchers funded to find prespecified results tweak the study parameters, knowingly or unknowingly, to obtain the desired conclusions.

Alternatives to Jes-Extender

The MaleEdge a Cheaper Alternative

MaleEdge Pro

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The MaleEdge (2008), also from DanaMedic, is the newer version and a product of years of customer reviews building on the Jes-Extender. The Male Edge is a good penis extender at a better price likely due to its use of a more delicate plastic as opposed to the gold and platinum used in Jes-Extenders.

Jes-Extender Platinum, for example, at $1000 is 5 times the price of the MaleEdge Pro. You’re paying for a better build and a lifetime warranty which may be unnecessary and too substantial an outlay for beginner extenders.

The MaleEdge Pro package comes with 1 penis enlarger, 1 product box, 1 travel bag, brochure, 5 rubber straps, 2 protection pads, and 1 cohesive gauze. The MaleEdge offers a 1-year warranty on their products. All MaleEdge penis extender packages come with a guarantee the product will give you a permanent enlargement if used correctly with the same eligibility criteria as Jes-Extender.

If you want an entry point penis extender to find how your body responds then the MaleEdge offers a better starter package than Jes-Extender. Note that some users have suggested that plastic instead of metal makes the MaleEdge less durable when worn in movement. If the prospect of the reportedly fragile plastic of the MaleEdge is a big concern for you, then the best alternative to Jes-Extender is SizeGenetics.

SizeGenetics The Best Alternative


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Like Jes-Extender SizeGenetics is a medical type 1 device, and like the MaleEdge the Ultimate Package is still only a fraction of the price of Jes-Extender. SizeGenetics is FDA approved, surgeon endorsed and comes with a 100% money-back guarantee that you will achieve your penis enlargement results.

What makes this penis extender so distinct is its advanced comfort system pivoted on a multi-directional angling piece for the head of your penis making it fully adjustable for comfort and easier movement. SizeGenetics also uses up to 2800 grams of phalogenic traction.

The SizeGenetics Ultimate package offers the most features and accessories including 1 device, 1 luxury leather case, 1 travel case, 1 comfort strap, 1 protection pad, 2 1-inch elongation bars, 4 2-inch elongation bars, 2 0.5 inch elongation bars, 1 No-slip Protech, comfort plasters, moisturizer, a traction powder, a PenisHealth DVD, wipes for cleaning your device, and eBooks on fitness and seduction techniques.

The Best Alternative for Immediate Penis Gains

Penis extenders give permanent growth but results will take months. Penis pumps give instant results but these results are temporary. Penis pumps can be used to bump up erection size but have to be used 6 days a week or results will fade within days.

Another point to bear in mind is that penis extenders can be uncomfortable whereas penis pumps are comfortable if not pleasurable, possibly contributing to their greater popularity than penis extenders with many incorporating vibrating options and masturbation sleeves.

Bathmate HydroXtreme7 (from the HydroXteme series)

Bathmate HydroXtreme

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Check price on Hydromax website

(Both the above websites are official)

Bathmate offers 5 models in the HydroXtreme series including the HydroXtreme Wide Boy (for men with a girth wider than 6.5 inches). The product line increases up to the HydroXtreme11, the world’s largest penis pump.

The handball pump allows pressure to be increased in small increments for precision and gives 35% more suction. The HydroXtreme comes with a manual of instructions where Bathmate recommends sessions of no longer than five minutes, hydraulic penis pump, 15.5-inch hose with connector, comfort pad, cleaning tools, a luxury case with a security lock, shower strap and water-based lubricant.

If purchased through the Bathmate website they offer a 60-day return policy, a 2-year warranty, and free delivery. Bathmate has dispatch warehouses worldwide meaning orders should be received within 5 working days.


Faruk, M, Ipekci, T. Penile traction therapy for Peyronie’s disease—what’s the evidence? Transl Androl Urol. 2016; 5(3): 303–309.

Gontero, P, Di Marco, M, Giubilei, G, Bartoletti, R, Pappagallo, G, Tizzani, A, Mondain, N. A pilot phase-II prospective study to test the ‘efficacy’ and tolerability of a penile-extender device in the treatment of short penis. Dipartimento di Discipline Medico Chirurgiche, Urologia 1, 2008; 6: 793 – 797.

Nikoobakht M, Shahnazari A, Rezaeidanesh M, Mehrsai A, Pourmand G. Effect of a penile-extender device in increasing penile size in men with a shortened penis: preliminary results. J Sex Med. 2011; 8(11): 3188 – 3192.

About Deon Black

In the past 11 years, Deon has helped tens of millions of people around the world through his sex toy reviews and guides. His work & advice has appeared on websites like: Insider, Healthline, MensHealth, Wikipedia, Yahoo, Cosmopolitan, Romper, WomensHealth and more. Deon pioneered the sex toy blogging landscape and is the most experienced sex toy tester around. Learn more. Since 2012 we've spent 60,000+ hours testing 1000+ sex toys. Get in touch on Twitter.