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Sale price: QAR 69,00 QAR 69,00

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Our jogging specialists designed these breathable boxers for runners looking for performance when working out.

Made with a single piece of fabric to avoid too many seams - one seam only. The slightly longer cut prevents the shorts riding up and reduces chafing.

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Sale price: QAR 69,00 QAR 69,00

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Product Features


Moisture management

The moisture-wicking fabric keeps you dry during (and after) your jog!

Reduced chafing

The seams have been moved to reduce chafing when running.


Held in place with stretch fabric, the boxers do not ride up.

Product Reviews

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1698 reviews

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Running Underwear

Great fit and very comfortable on runs.

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Great fit

Great fit, comfy , really good fit easy to wear when running in leggins or working out in the gym.

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Very comfortable

Sizing was perfect, comfortability outstanding

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Good value

If 32 - 34 waist get extra large.

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poor sizing

I have purchased underwear from decathlon in the past and had no problem with sizing. This product is grossly under sized. I would estimate you would have to go up 3 sizes to get them to fit. I would say the underwear looks a good quality, but I would not be able pass judgement on comfort, as would not of been able to get them.

Great underwear

Would recommend- well-fitting and comfy

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Stopped my chafing!

I read the reviews and saw the comments about the seam, which is small and where the legs come together. However, this has caused me no problems and I have bought a second pair. The boxers have stopped my chafing, provide good support where required and feel good on the legs (I have tree trunk legs from my rugby playing days). Plenty of stretch and support.

Shocking - words can not explain

I am a fairly serious runner. Wore these once. Nearly ruined me. Never been in so much pain in my life. Truly unbelievable. Very very dissatisfied with this product. Pls consider carefully prior to purchase.

Pity about the seam

There is a totally unfinished seam in a very critical point in the crotch. Wearing inside out partly solves the issue, but the legs then roll up and causes other chafing. I love Decathlon, but this product is a fail.

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Hello Rob,

Thank you for your review of our Kalenji Running Boxer. I'm sorry the boxer is not suitable for use. I have noticed that we have received a small number of reviews relating to the position of the assembly seam. The team will continue to monitor this situation. I propose that you return the model purchased, at your convenience -


Comfortable and supportive

Excellent product.... bought a trial pair in Spain, now bought more because I’m impressed! As good as, and much better value than, the expensive branded ones I’ve been buying. Highly recommended!

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Good for cycling

I've found these great for cycling. Because they stretch with your body like tights they don't rub your skin and the cycling shorts rub against the fabric of the boxers rather than your skin so it's like the friction is between the boxers and your shorts. Since wearing these I don't get sore skin in the saddle area anymore (last week I was 16 hours cycling) plus it's better to take a spare pair of these instead of a spare pair of shorts when touring.

Not seamless

I bought these as they are billed as seamless and I need seamless underwear when running. Imagine my surprise when I get home and check them to see a seam, and right in the place where chaffing happens. Not happy as for the cost of one pair of these, I can get three pairs in another high street shop that have no seams at all. That said they are relatively comfortable as normal underwear

Hello, Thank you for your review of our Kalenji Running Boxer. I'm sorry the boxer is causing irritation. Your feedback is important to help us adapt our offer. The term "seamless", it is traditionally used to describe products made in with a tubular knit. I understand that it is misleading when there is an assembly seam left as mentioned. I will recommend that the information on the product page of this boxer is reworked. I propose that you return the model purchased, at your convenience, in one of our stores, for an exchange or refund. Sorry for the inconvenience.


Seamless Running Undershorts

Very comfortable, the sizing is a bit on the small side so recommend getting two sizes larger than usual. They usually have a few on display so you can see the size for yourself.

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Top pants

Good pants, as good as runderwear

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Good but could do with a little more room

Really good running boxers that allows your skin to breath and helps stop rubbing....I use them with Decathlons anti friction cream as well. The only down side is if your a man who has a “bigger package” they really do squash everything and this can be a little uncomfortable after a while.

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Additional Product informations


Main fabric

  • 14% Elasthane
  • 43% Polyamide
  • 43% Polyester

Waist band

  • 22% Elasthane
  • 78% Polyester

Run and breathe

Quick-drying and moisture-wicking synthetic fabric to keep you dry throughout your run.

No more chafing!

No seams on the inner leg. This prevents chafing for more comfortable running.

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