Gildan Men's 5-Pack Assorted Premium Cotton Comfort Briefs 100% Cotton Premium soft cotton for all day comfort. Plush, non-binding waistband keeps its shape after washing. Designed with a modern fit and leg bands that stay in place. Solids: 100% cotton. Sports Grey: 90% cotton / 10% polyester. Dark Heathers: 35% cotton / 65% polyester.