Updated on 14th August 2026
SizeGenetics have been at this since 1994 and they have the paperwork to prove it. What they still do not have is a way to tell you how hard the device is pulling. Here is exactly where the two differ, checked line by line against both makers’ own published material.
180-day money-back guarantee · discreet packaging
Every row below is something you would notice in a real session, not a line on a spec sheet.
| Epic Extender Pro | Ultimate System | Value Edition | |
|---|---|---|---|
| What it costs | $379 (Epic has cheaper models with fewer features) | $299.95 | $199.95 |
| Tension readout | Digital display on the device, kg or lb | None. Nothing on the device shows a figure | None. Nothing on the device shows a figure |
| How much tension | Up to 22 lb | 900g to 2,800g, so about 2 to 6.2 lb | Same range, with fewer bars to reach the top |
| Changing the tension | Turn the rods and watch the number | Add elongation bars from the full set | Add bars, and buy more at $12 to $20 a pair |
| App | Logs tension and time from the device over Bluetooth | None. A weekly diary on a separate website | None. A weekly diary on a separate website |
| Session time | On the display, and logged in the app | Not shown. You count the hours yourself | Not shown. You count the hours yourself |
| How it holds you | Vacuum cup, five sizes, seats and clips in | Comfort strap, protection pad, silicone tube, no-slip grip | Comfort strap, protection pad, silicone tube |
| Hours a day it asks for | 1 to 4 hours, your call | Their protocol is roughly 4 to 6 hours | Their protocol is roughly 4 to 6 hours |
| What is in the box | Five cups, four sleeves, tape, pump handle, straps | 14 items including two cases, full bar set, plaster and creams | Device, case, front piece, strap, pad, tube and four bars |
| Being shown how to train | Guided plans, full video course, support and Discord | A printed 6-week slow start-up programme | A quick start guide |
| Getting your money back | 180 days, no conditions, just ask | 600 hours of training at an average 2,000g, inside 6 months | 600 hours of training at an average 2,000g, inside 6 months |
| Proof you have to supply | なし | Weekly diary entries plus before and after ruler photos | Weekly diary entries plus before and after ruler photos |
| Parts you reorder | Silicone sleeves, roughly monthly | Pads, tubes, straps, gauze and plasters | Pads, tubes, straps, gauze and plasters |
One is a thirty year old design that works by strap, bar and patience. The other puts the number on a screen and logs the session for you.
Epic Extender ProDigital, adjustable
SizeGeneticsStrap and bar, since 1994
What one session actually looks like
Pick the cup that fits from five sizes and clip it in.
Your focusOne step
Fit the silicone tube, seat the protection pad, then the comfort strap.
Their Ultimate kit adds a no-slip grip and a 3M plaster for long sessions.
Your focusFour or five parts
Turn the rods until the screen reads the number you want.
Your focusAn exact figure
Add elongation bars. Their guide runs from about 900g up to 2,800g.
There is nothing on the device to check it against, so it is a bar count.
Your focusCounting bars
Clip the angle straps and wear it for 1 to 4 hours under your clothes.
Your focusGet on with your day
Their protocol asks for roughly four to six hours a day, worn discreetly.
The comfort kit exists because those sessions are long, and it is a good kit.
Your focusMost of the day
The app already has your tension and your minutes, straight off the device.
Your focusNothing
Nothing is recorded by the device, because there are no electronics in it.
Their guarantee asks you to enter measurements weekly in a diary on another site.
Your focusA web form
Wash the cup and you are ready for tomorrow’s session.
Your focusSoap and water
Pads, tubes, straps, cohesive gauze and plasters are all consumables.
Their shop stocks every one of them, which is genuinely useful and is also the point.
Your focusA parts order
SizeGenetics is a trademark of Danamedic ApS. The product shown on the right is theirs and appears here only so you can see the two designs side by side.
Every part of it exists to fix one of the four reasons men quit extending: guesswork, discomfort, no record of what you did, and no idea what to do next.
This animation shows the Epic Extender, not the Pro. It is our lower priced model, built the same way but without the screen.
Your exact pull on the screen, in kilograms or pounds. Set a number, hit it every session.
Two anchor points for the angle straps, so you can wear it in any position.
Turn them to change the tension, right up to 22 lb. Nothing to add on.
The wide soft base that sits against you, so a long session does not end early.
Five sizes in the kit. Seat it and clip in, with no strap or plaster to fit.
Draws the vacuum in the cup in a couple of squeezes.
Four of them, so you can pick the fit that is comfortable rather than the only one you were sent.
Sticks to itself and not to you. There if you want extra grip on a longer session.
And none of it is left to you to figure out
Every extender comes with the free PE Trainer app, the full video course and real support from our team. You get the routine, the technique and someone to ask, so you get the best results in the shortest time instead of guessing your way through the first six months.
Verified Judge.me reviews, with the photos they uploaded.
paul t. Verified United Kingdom
⚠ Warning: graphic image
100% easy to use extender. Brilliant design, awesome quality & construction. I have been using the penimaster pro, but this is so much more for getting the right tension. 100% money well spent. Currently stretching at 2.5 kg comfortably.
Pirvate R. Verified United States
⚠ Warning: graphic image
エクステンダーをいくつか比較した結果、この製品があらゆる面で断トツの1位でした。アクセサリーもいくつか購入したので、あと1～2インチ伸ばせるのが楽しみです。現在は8インチです。経過についてはまた追って報告します。
Patrick Verified United States
⚠ Warning: graphic image
カスタマーサービスが最高です！エクステンダーのディスプレイに不具合があったのですが、私が「部品を送ってくれれば上部パーツを交換する」と申し出たにもかかわらず、新品を丸ごと送ってくれました。epic extender 、ありがとうございます！
Jomarleo Verified United States
⚠ Warning: graphic image
Haven’t tried any other extender but right away with the digital scale doing one hr every day able to pull at 7.5lbs off the bat just because how comfortable it is! starting size bpel 5’ length x 5’ girth, maybe a year or more I’ll see some improvements.
Five rounds. Only the things that genuinely differ. Here is the card.
Round 1Knowing your exact tension
A digital display on the device, in kilograms or pounds. You look down and the number is there, session after session.
There is nothing on the device that shows a figure. Their own copy describes starting near 900g and building toward 2,800g by adding elongation bars, so what you are pulling is worked out from the bar count.
Round 2How hard it will pull
Up to 22 lb, changed by turning the rods while you are wearing it. Progression costs nothing and takes a second.
Their published maximum is 2,800g, which is about 6.2 lb, and that is the top of the range rather than a starting point. To move up you add another bar.
Round 3Keeping a record of it
The app reads the device over Bluetooth, so your tension and your minutes are logged whether or not you remember to do anything.
There are no electronics in the device. Their guarantee asks you to enter your measurements every week in a diary on a separate website, by hand, for six months.
Round 4Getting your money back
180 days, and you can ask on day two or day 179. No hours to log, no photographs, no case to argue, and every kit we sell is covered.
Their published terms ask for 600 hours of training at an average traction of 2,000g inside six months, weekly diary entries on a separate site, and before and after photographs with a ruler on the shaft. 600 hours in six months is over three hours a day, every day. And the 2,000g average has to be evidenced on a device that never shows you a figure.
Round 5Proof that it actually works
A private community of over 5,000 men, and documented before and after results from them. Up to two inches of length, and up to an inch of girth once the pump is added. It is not a clinical trial and we will not call it one, but it is real evidence from real users, photographed and measured.
An FDA-registered, CE-certified device from the company that brought penile traction to market in 1994, with over a million units sold and a product page that cites the peer-reviewed literature properly. That is a serious record.
Final card 4 – 0Four rounds to Epic Pro, one even
Up to two full inches of permanent length is possible, and the average gain our buyers report is about 1.6 inches. Length built through traction stays. Most men also notice much better erection quality along the way, harder and fuller, and that shows up long before the inches do. The verified buyers below are the ones who kept turning up.
Do not take our word for it
Epic Pro, tested for weeks
The verdict, blunt
Epic ProHis verdict
MrEcz is a credible, long-standing reviewer of PE equipment who tests gear from every brand himself.
ここから始めましょう
The Pro base with the digital display, five vacuum cups, four sleeves, the rods, the angle straps and the app. Everything you need to run the routine from day one.
$379 original price
21% OFF
SizeGenetics also give you six months, but their terms ask for 600 hours of training, weekly diary entries and photographs before you can claim. Ours asks for nothing, and a damaged or faulty unit is replaced free.
On the device, yes. SizeGenetics is a serious brand with a serious record, and their comfort kit is well thought out for the long sessions their protocol asks for. What the device cannot do is tell you how hard it is pulling, pull as hard as ours, or record anything. The Epic Pro does all three. They are cheaper, and their credentials are stronger than ours.
By adding elongation bars. Their own copy says a new user starts at around 900 grams and builds toward a maximum of 2,800 grams as comfort allows. There is no readout on the device, so the figure comes from their guidance rather than from anything you can see. The Epic Pro shows the number on a screen and goes to 22 lb, which is roughly 10,000 grams.
Quite a lot, and it is all on their guarantee page. You need 600 hours of training at an average traction of 2,000 grams, inside six months. You need to enter your measurements every week in their online diary. And they ask for before and after photographs with a ruler placed on the shaft. 600 hours in six months works out at more than three hours a day, every day. There is also the awkward part: the 2,000 gram average has to be evidenced on a device that never displays a figure. Ours is 180 days, no conditions, just ask.
It is FDA-registered and CE-certified, and Danamedic ApS have been making it since 1994 with over a million units sold. Their product pages cite the peer-reviewed traction literature properly, including the EAU guidelines. We do not have that paperwork and we are not going to pretend we do. What we have instead is a community of over 5,000 men and documented before and after results, which is a different kind of evidence rather than a lesser one.
Their protocol is roughly four to six hours a day, and their guarantee assumes 600 hours over six months. We suggest starting at 30 minutes and building towards 1 to 4 hours, because the tension you can verify matters more than the hours you cannot. Whichever you choose, consistency over months is what actually grows you.
Theirs is a noose-style comfort strap over a protection pad and a silicone tube, with a no-slip grip and a 3M plaster in the Ultimate kit for longer wear. It is a well developed comfort system and it is why a lot of men get on with it. It is also four or five parts to fit each time, and the pads, tubes, straps, gauze and plasters are all consumables they sell separately. The Epic Pro uses a vacuum cup in five sizes that seats and clips in.
The silicone sleeves do. On a regular routine of an hour or more a day, expect to swap them about once a month, often longer, and replacements are cheap. Everything else, the cup, the rods, the base and the display, you keep. SizeGenetics have the same kind of running cost across their pads, tubes, straps and plasters.
The Value Edition is $199.95 and covers the device, a case, the front piece, a strap, a pad, a tube and four elongation bars. The Comfort Package is $249.95. The Ultimate System is $299.95 and adds the full bar range, two cases, the no-slip grip, a 3M plaster, their creams and a printed six-week programme. There is also an XXL at $299 and a Curvature and Peyronie’s Edition at $299.95.
$299.95 for their Ultimate System against $379 for the Pro. The extra buys the digital tension display, tension you can change by hand up to 22 lb, and an app that reads the device instead of your memory. If you want the Epic build without the screen, the Epic Extender Full Set is $259, the Best Extender V5.0 is $256 and the All Day Stretcher is $199, and they carry the same cups, the same course, the same support and the same 180-day guarantee.
Start at 30 minutes a day on low tension for the first week, then build gradually towards 1 to 4 hours. Stop immediately if you feel numbness, pain or a colour change. Traction works through consistency over months, not through pulling harder, which is exactly why knowing your real tension number matters so much.
A number, not a bar count
Digital tension on the device, adjustable up to 22 lb by hand, every session logged in a free app, and 180 days to change your mind with nothing to prove. Cheaper Epic models are there too, from $199.
See the Epic Extender kits →180 days money back · discreet billing · free private Discord with any purchase
Not sure which one? Take the 2 minute quizSizeGenetics prices, package contents, tension range, wear protocol, regulatory status and money-back guarantee conditions were taken in August 2026 from sizegenetics.com, the manufacturer’s own store, including the Ultimate System product page and their published guarantee page. Tension figures are their own, converted from grams at 1000g to 2.2 lb. Clinical references on their site describe penile traction therapy in general and are cited there, not here. SizeGenetics is a trademark of Danamedic ApS and is used here for identification and honest comparison only. Nothing on this page is medical advice, and the Epic Extender Pro is not a medical device. Prices, packages and policies change, so check the seller’s current terms before you buy. Individual results vary.
Verified buyers using the Epic system. Not stock photos.
