JINSHI Men Underwear Bamboo Long Boxer Briefs for Mens 95 %Bamboo fiber+5% Spandex Stretch for comfort in action 95% bamboo fiber/5% spandex knit wicking performance boxer briefs Longer than the orginals to stay put during high activity Each pair is neatly folded in own little stylish zip locked baggie Pls order it via our JINSHI size chart, recommend to go one size larger