Reusable Belt Condoms
What it is
The Jes-Extender curvature edition, supplied in a mahogany case
Jes-Extender Straightener is the model the maker, DanaMedic ApS of Denmark, sells as its “Curvature and Peyronie’s Edition”. It is a traction device that applies a steady, adjustable stretch along the shaft.
| Maker | DanaMedic ApS, Kgs. Lyngby, Denmark |
| Traction marks | 1,200 g, 2,000 g, 2,800 g |
| Case | Mahogany case |
As stated on the manufacturer’s website and QuickGuide.
Key points
What to know before you choose it
Extended kit
Includes extra tubes, a second front piece, comfort plasters and gauze.
Bars in three lengths
½ in, 1 in and 2 in bars adjust the length.
Use with a doctor’s care
For curvature, the maker itself recommends combining the device with a doctor’s care.
Marked traction
Three marks from 1,200 g to 2,800 g.
Package
What the maker lists in the Straightener kit
- 1 Jes-Extender Straightener device
- 1 dual-function front piece, plus 1 extra
- 1 silicone tube, plus 2 extra
- 1 comfort strap
- 1 protection pad
- 2 elongation bars, ½ in (1.25 cm)
- 2 elongation bars, 1 in (2.5 cm)
- 4 elongation bars, 2 in (5 cm)
- 1 no-slip Protech
- 2 3M comfort plasters
- 1 gauze
- 1 quick start guide
- Booster Pills (listed by the maker as part of the kit)
Contents as listed by the manufacturer for the Straightener edition.
How to use
Fitting, as described in the Jes-Extender QuickGuide
1 Add bars
Add elongation bars until the device is slightly longer than the flaccid, fully stretched penis.
2 Front piece
Push the bars into the front piece until it clicks.
3 Tube or strap
Fit either the silicone tube or the comfort strap. Use only one of the two.
4 Put on
Slip the device on and push the front piece towards the body until the springs are compressed.
5 Fasten
Tighten the tube or strap behind the edge of the glans, then release the front piece.
6 Add traction
Turn both hand screws inwards together; stop when the threads become visible.
Start-up programme from the maker: about 1 hour a day in week 1, rising by an hour each week to 6 hours in week 6, at 800–1,200 g at first and up to 2,000 g by weeks 5–6. Traction marks: 1 = 1,200 g, 2 = 2,000 g, 3 = 2,800 g.
Important safety information
- For adults aged 18 and over only (manufacturer).
- The maker says correct use should not be painful and that slight discomfort may occur at the beginning. If you feel pain, take the device off and re-check the fitting instructions.
- Do not go to extremes with traction or wear time; follow the start-up schedule.
- If you have penile curvature, Peyronie’s disease or any medical condition, speak to a doctor before using a traction device.
- Published reviews of traction devices report mild, temporary side effects such as pain, redness, bruising and itching.
Full details
Full product details
If the area behind the glans becomes sore or irritated, the QuickGuide says to place the included protection pad under the tube or strap as a cushion. For the first few weeks the maker advises not wearing the device for more than 4–5 hours at a time.
The maker’s curvature page suggests wearing the device for at least 15 minutes during the first session.
Independent research on traction devices in general, not on this product:
- A 2023 Cochrane review of non-surgical treatments for Peyronie’s disease rated the evidence for traction as very low certainty.
- A 2019 review reported modest and variable benefit that depended on daily wear time, and noted that studies were small and not randomised. Side effects reported were mild and temporary: pain, redness, bruising and itching.
A 2023 meta-analysis of five studies in men with Peyronie’s disease found a reduction in curvature with traction therapy but no significant change in length or erectile function, and described the studies as small and of low to intermediate quality.
Is the Straightener an official Jes-Extender model?
Yes. The maker sells it as the Curvature and Peyronie’s Edition.
How does the kit differ from the Jes-Extender Original?
The maker lists extra silicone tubes, a second front piece, ½ in bars, comfort plasters, a no-slip Protech and gauze in the Straightener kit.
Should I see a doctor first?
Yes, if you have curvature. The maker itself recommends combining the device with a doctor’s care.
- Jes-Extender: Jes-Extender Straightener — manufacturer
- Jes-Extender: curvature page — manufacturer
- Jes-Extender QuickGuide (PDF) — official manual
- Jes-Extender: start-up programme — manufacturer
- Cochrane: Non-surgical therapy for Peyronie’s disease — independent research
- Valenzuela et al., Therapeutic Advances in Urology 2019 — independent research
- Almsaoud et al., Translational Andrology and Urology 2023 — independent research
Information on this page is taken from the sources above and has not been reviewed by a doctor. Read the label on your pack before use.
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