Men's Underwear

Discover essential comfort and support with Decathlon's range of men's underwear. From breathable boxers and supportive briefs to performance-driven sports underwear and insulating thermal base layers, our collection offers ergonomic designs and moisture-wicking fabrics for every need. Explore options perfect for daily wear, intense workouts, or outdoor adventures.
16 items
4.7/5 based on 980 reviews collected online and in stores
Decathlon's comprehensive collection of men's underwear is crafted to provide foundational comfort, support, and performance from the inside out. Our range includes classic cotton options for everyday comfort, advanced synthetic fabrics designed to wick away sweat during sports, and thermal underwear for crucial warmth in cold conditions. Whether you prefer the coverage of boxers, the snug fit of briefs, or specialized athletic designs that reduce chafing and support muscles, our underwear ensures you stay dry, comfortable, and confident throughout your day and during any activity. Explore durable, breathable, and innovative options that form the perfect base layer.