Under Armour Men's Iso-Chill Mesh 6" Boxerjock 90% Nylon, 10% Elastane Iso-Chill mesh fabric helps disperse body heat, making it feel cool to the touch 4-way stretch fabrication allows greater mobility in any direction Moisture Transport System wicks sweat & dries quickly Anti-odor technology prevents the growth of odor-causing microbes Performance waistband