Men's Mountain Bike ST100 Shorts - Black



Made for
Ride through the undergrowth with no worries this summer. These comfy shorts absorb vibrations and prevent rubbing and chafing.
Sizes guide

Abrasion resistanceThe "warp and weft" fabric withstands rubbing and snags.
Sitting comfortPreformed foam pad. The seams are positioned to prevent chafing.
Freedom of movementEnjoy the regular cut, stretch fabric, and elasticated waist.
BreathabilityWith undershorts that effectively wick away perspiration.
PocketsTake everything you need in the flap pocket on the right thigh.
StabilityFeel supported with the stretchy undershorts
Warranty2 Years
Technical Information

Cycling shorts, the mountain bike rider's kilt
Don't forget: you wear cycling shorts without underwear. Why? Wearing underwear risks causing irritation. Your skin can rub against the seams and elastic of your underwear. Chafing, shearing, all combined with perspiration (heat + humidity)... this is quite the recipe for infections. That is why we design our shorts with anti-bacterial pads. Dare to wear shorts without underwear!
Our care tips
Machine wash inside out on a synthetic programme at 30°C. Do not use too much detergent, and do not use softener. It is best dried on a hanger in a warm, well-ventilated place.
Product tests
Our team of product designers based at the B'Twin Village in Lille is continuously working to make cycling more comfortable for our users. Our obsession is to create products that meet the specific cycling needs of our users and eliminate things that get in the way of their rides.
A rating to compare products' environmental impact.
A product's environmental impact is calculated for its entire life cycle using various indicators. An overall rating (ABCDE) is given, allowing you to easily identify products with the best environmental performance by comparing similar products to each other (T-shirts, trousers, backpacks etc.). Decathlon openly displays the environmental ratings of its products. To find out more:
Information / Concept / Technology
Main fabric : 100.0% Polyester Inner fabric : 84.0% Polyester, Inner fabric : 16.0% Elasthane Padding : 56.0% Polyester, Padding : 40.0% Polyurethane, Padding : 4.0% Cotton

Product test
Our engineers always have real riders test all our products in real conditions. These tests round out our lab tests and let us validate all our products before they hit store shelves.

Stockage tips
Store in a clean, dry place.
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