Built with sweat-wicking FastDry technology and stretchable Rugged Flex fabric, our 5" Tech Boxer Briefs work hard to keep you dry, comfortable, and odor-free, all workday long. 173 GSM5.1 oz, 100% Polyester, Grid Face, Plaited Smooth Back. Fast Dry wicks away sweat. Rugged Flex technology for ease of movement. Fights odor. Smooth flatlock seams for comfort. Contoured front for comfort. Tagless label enhance for comfort. Machine wash. Imported.