Hanes Men's X-Temp Performance Cool Boxer Briefs 3-Pack_Assorted_X-Large 100% Polyester Hanes Performance Cool boxer briefs are built for your workout with ultra-fast drying fabric and X-Temp technology designed to adapt to your temperature and activity to keep you cool and dry for all day comfort. Boxer briefs work with your body temperature for all day comfort. Lightweight quick-drying, breathable boxer briefs wick away moisture to keep you cool and dry. Tag-free for itch-free comfort. Available in a convenient 3-pack.