Product Colors and Sizes
Men's Running Breathable Briefs
Breathable briefs at a great price! The technical fabric efficiently wicks perspiration away. Their softness provides comfort throughout your run.
Free returns
Free shipping over $30
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
Product Features

Moisture wicking
I stay dry because my product absorbs and wicks away moisture and dries quickly.
Irritation reduction
The seams in my product have been displaced to reduce chafing when I run.
Product Customer Reviews

I purchased the briefs and the boxers of the same material. I've worn them as daily wear for over 6 months (not the same two pair SHEESH!) and took them with me on a recent bike tour. they dried fast, took up little space and are very lighweight. All great attributes for cycling gear. My one and only disappointment came when I inadvertedly tossed a pair in the dryer and they melted! (MY BAD!) I find both styles are comfortable, offer good (not great) support and are easy to care for. Just remember to READ THE CARE INSTRUCTIONS!
Our slim 14-year old athletic son loves wearing these briefs swim practice. He says they feel way better to wear than jammers.
Our slim 14-year old athletic son loves wearing short tights for cross country practice. He says they feel way better than wearing shorts. Size small fits well. He is very happy.
Our slim 14-year old athletic son loves wearing these briefs for swim practice. He says wearing them feels way better than jammers so much so that he had me purchase four to wear almost every day at practice. Size small fits well. He is very happy. Seems like most boys are wearing speedo briefs again.
Our slim 14-year old athletic son loves wearing these briefs for cross country or track under his shorts or short tights. He says they feel way better than boxer briefs or regular tighty whities so much so that he had me purchase a dozen for him to wear almost every day. Size small fits well. He is very happy.
Went for a run in 35c heat and these were perfect for the conditions.
Bought these to go running in. Very comfortable to wear.
I have several pairs of these briefs. They are very comfotable and ultra light. The pouch is supportive both in gentle and strong exercise. Most of all the pouch is single layer, which is much more responsive to form, and much cooler than other briefs. In the past I have had to cut the inner layer out of briefs to get a comfortable and supportive fit without undue heat build up. These can be worn under unlined high cut running shorts with great comfort and look great, and also make excellent general purpose underwear and loungewear. The sizing is forgiving. I fall between sizes and so I have two sizes which each fit well, with the smaller size accomodating me well if a little more snugly. Both colour fabrics have a good feel with the grey perhaps somewhat better. The red fabric is less opaque but still covers well except very close up. They are much admired in the locker room.
I bought my first Kalenji briefs in Tenerife several years ago and I'm still using them, long lasting with reasonable price. After first time I have now visited different times Decathlon in Tenerife and Gran Canaria when holidaying there and bought some more briefs. Now I found that you have opened e-shop in Finland. Great!
These are great briefs and perfect for running they are light and breathable which stops from and pools of sweat if you know what im saying! Plenty of space up front! If anyone says there isnt theyre just trying to make them selves sound better and are probably hung like a budgies tongue
Bit gimmicky on normal pants but nice & thin so guessing more breathable.
Nice fit, comfortable and good price.
Used mainly for running. Keeps everything secure with minimal chafing
The stitching at the seems is really rough and caused chafing. Don't waste you time with these.
Fit well, comfortable and avoids chafing. Use them all the time for running , including half and full marathons. Definitely recommend . Onto third pair!
Size Guide

Additional Product Information
Composition
Main fabric
- 16% Spandex
- 84% Polyester cationic
- 16% Spandex
- 84% Polyester cationic
Bra band
- 22% Spandex
- 25% Polyester cationic
- 53% Polyamide
- 22% Spandex
- 25% Polyester cationic
- 53% Polyamide
Origin
Imported
Product testing
These briefs have been lab and field tested by athletes of all levels. It was passed by all our testers for its capacity to provide comfort while running.
Care instructions
Can be machine washed and mixed with other colors and fabrics. Wash at 86°F max. Do not tumble dry. Do not iron.
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Research and development
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Men's Running Breathable Briefs
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Heavy products return policy
If you return a product you will receive a refund for the purchase price plus any applicable sales taxes, less any non-refundable charges.
Decathlon will cover all shipping costs associated with your return except for items excluded from our return policy such as bikes, basketball hoops, snowboards, surfboards, tents, and other larger / heavier items.
Return costs for heavy products:
Weight Thresholds | Shipping within California | Shipping outside of California |
---|---|---|
> 9 lbs | $20.00 | $25.00 |
> 30 lbs | $50.00 | $65.00 |
> 100 lbs | $100.00 | $125.00 |
> 200 lbs | $200.00 | $230.00 |
If you return a product at any of our store locations, we will gladly help you find the best alternative product or refund you on the spot.
