Lupo Men's Essential Cotton Brief Underwear 90% Cotton, 10% Polyester Imported Pull On closure Hand Wash Essential cotton briefs for every day comfort Reinforced stitching for added support Flat lock seams minimize chafing Antimicrobial properties for lasting freshness Lupo sizes, in inches, are xs (25-27), s (28 - 30), m (32-34), l (36-38), xl (40-42) and xxl (44-46).