Under Armour Men's Original Series Printed Boxerjock Boxer Briefs X-Large Black Lightweight, smooth HeatGear fabric and articulated fly panel 4-way stretch fabrication allows greater mobility and maintains shape Moisture Transport System wicks sweat and dries quickly Anti-odor technology prevents the growth of odor causing microbes Smooth flatlock seams allow chafe-free motion Working fly 90% polyester/10% elastane