Hanes Men's X-Temp Active Cool Long Leg Boxer Briefs 3-Pack 95% Cotton/5% Spandex Hanes boxer briefs with X-Temp technology is designed to adapt to your temperature and activity to keep you cool and dry for all day comfort. Active Cool boxer briefs work with your body temperature for all day comfort. Long leg boxer brief styling. Lightweight, quick-drying fabric wicks away moisture to keep you cool and dry. Leg bands that won't ride up guaranteed.