Under Armour took its sweat-wicking, keeps-you-cool technology and turned it into the best men's boxers in the game. It feels cool, stays put, and provides a zero-distraction fit that's snug, but not tight. It is insanely soft, breathable fabric and articulated mesh fly panel and gusset. No side or back seams for ultimate comfort. Four-way stretch construction moves better in every direction. Material wicks sweat and dries really fast. Anti-odour technology prevents the growth of odour-causing microbes. 90% Polyester, 10% Elastane.