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Jammer Swimsuit 4 mm Glideskin 500 Neoprene

Sale price: $15.00 Regular price: $64.99

Neoprene jammer for training in the pool or in the sea that provides good buoyancy at the legs and enables better performance.

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Sale price: $15.00 Regular price: $64.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8388627

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Product Features

A photo of the Jammer Swimsuit 4 mm Glideskin 500 Neoprene in use

Jammer Swimsuit 4 mm Glideskin 500 Neoprene | Designed for swimmers looking for buoyancy and moderate thermal protection.

Neoprene jammer for training in the pool or in the sea that provides good buoyancy at the legs and enables better performance.

Chlorine resistant

more than 200 hours of use


A 4 mm neoprene product that offers good leg buoyancy.

Thermal insulation

The 4 mm neoprene keeps the buttocks and thighs warm in temperate water.

Freedom of movement

The elastic neoprene is easy to put on and allows for easy movement.


Easy to adjust fit around waist thanks to the drawstring.

Questions & Answers

Product Customer Reviews

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207 Reviews
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Jammer Swimsuit 4 mm Glideskin 500 Neoprene,black
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Neoprene jammers

Great product and excellent performance

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Buoyancy Shorts

Ordered Wednesday delivered Friday Morning via Standard Delivery which is outstanding, so much so i wore them for my hour long regular lunch time swim, these are an exceptional product i usually take 30 seconds for 25 metres, today it took me with these buoyancy shorts 23 seconds, i shaved 7 seconds straight away at a leisurely pace. I was always a slow and tired swimmer after an hour long session not today i was hardly breathing and could of done another hour. They have stopped the drag and resistance straight away. They are easy to get on and off, as i rolled the legs and they were even easier, because they taper up the leg the rolling up makes them wider, same with taking them off, i turned the legs again like a turn up, rolling means you can get them right under your crotch. I hung them out to dry this afternoon and they were stone dry after an hours drying, very,very impressed i even ordered another pair.


Suffering from sinking legs and trying all the suggested cures, I looked for a solution, as swimming crawl was making my lower back sore. These are excellent for making the lower body and legs more buoyant. So I can swim with a better technique and also am enjoying my swimming more. Decathlon products I've found to be very reasonably priced. I thought were expensive for what they are simple small pattern of neoprene, however, they do work so glad I bought them. Size-wise I am a 35" waist and bought a 46 which fit snugly and well. A good buy for me. I'd recommend.

Swim Better

Hi I recently purchased these after researching them. I have been swimming 3 times a week and was using a swim byod. These shorts now enable me to have more confidence kicking and becoming a better swimmer. I personally have had no issues with regards to size I ordered the size according to the guide and they fit fine. Highly recommend this product

Very Poor Product

I bought these shorts to aid my sinking back end when trying to swim front crawl. Brilliant! They where just what the doctor ordered, fit comfort, bouyancy, made swimming so much easier. However after only 4 times in the pool I noticed small splits in the Neoprene. Because I could not speak with any one on the phone, I sent an email with a picture of the damage to Decathlon asking if it was possible to send a replacement item, pre return of damaged goods. Automated reply! telling me my options to return which I had already read on the web site! I am now looking to procure from another site and return these as and when I procure a replacement item! Very frustrated customer!

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Great for replicating a wetsuit swim

These shorts are great if you want to replicate the feeling and buoyancy of swimming in a wetsuit whilst training in the pool. I have already recommended them to people. Just be sure to get your sizing right, I’d say if in doubt go a size up


Excellent swim jammers. Lift hips and keep cold out. Really good quality

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One slight problem but otherwise very good

Bought these not really sure what to expect and in fairness they fit well and offer a degree of buoyancy which makes training more productive. The only criticism is the pull up tags were very poorly attached and came off straight away which makes pulling up more difficult and a training session in itself I’m a little uncertain about recommending from manufacture quality but to wear they are very good when on

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Great product

Wanted to try these for awhile to reduce the amount of swimming I do using a pull buoy. Great product and definitely helping with the swimming.

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Great Service

Had to replace jammer shorts due to being too small. Seamless process to return and replace. Also happy with quality of product.

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Big Thumbs up from me

As an older swimmer, keeping my core/belly level is important. Loads of the other swimmers in the tri club have started wearing buoyancy shorts costing over twice as much as these but i.m tight, so went for the cheapest option I could find and i'm so glad I did....These do a great job and the quality is spot on, really do the job they're supposed to and comfy as well. I,m a 32" waist and that's what I bought, they're a snug fit, don't go for a size smaller as you'd find them too snug.

Neoprene shorts

Bought these jammers a couple of weeks ago from the Gateshead store ,the sales assistant was brilliant helping me find them in store.i tried on a size 30 inch waist as thats my measurement waist wise,they were very tight,opted for the 34" which fitted well and provided flexibility when moving .im in the process of improving my frint crawl to do longer triathalons and needed to have a more streamlined approach in the water i found the product brilluant as the boyancy lifted my backside ut toward the water surface and enabled me to kick with ease and not have to worry about sinking .i think there excellent but try on first for best fit

Check your sizing!

I ordered these in a 32" which I presume referred to waist measurement - they are a men's garment so as a size 10-12 lady I presumed they would be amply big enough, they were so tiny that I couldn't pull them up over the tops of my legs, and I'm tall and slim.

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Dear Sian,

Thank you for your recent feedback. We are sorry to hear that you found the neoprene jammers way too small. This model is not as flexible as the standard swimming jammers due to different component. We suggest to try the next size up. Please return you current item to local store or use the online procedure for full refund or exchange.
Once again apologies for any inconvenience caused.

Kind regards, 

Excellent improvement to swimming technique

I have been using a pull buoy training for triathlons but was not comfortable swimming with it. My coach suggested trying these neoprene jammers so I bought these. What an improvement - would highly recommend them ....

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Additional Product Information


Main fabric: 90.0% Rubber - Chloroprene - Neoprene, 8.0% Polyamide, 2.0% Spandex


JAMMER – 17.3” longThe NEOPRENE JAMMER is perfect for swimmers who want to stay in the water for longer without tiring their lower limbs, and while improving the buoyancy of their buttocks and thighs. A swimsuit should primarily favor comfort. It should enable you to move with ease. That's why it is important to choose the cut of your swimwear carefully.

Material: aquathermic technology:

AQUATHERMIC components integrate thermal features to reduce thermal shock when entering the water, and also reduces the duration and intensity of the wind chill effect* when getting out of the water. It also improves thermal insulation between your body and the outdoors to enable you to swim longer in cold conditions

Storage instructions

Dry outdoors after washing.



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


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