Zengvee Men's Super Swimming Boxer Briefs Imported Great for training and swimming for fitness and exercise Nylon + Spandex Machine or hand wash separately in cold water, only non-chlorine bleach when needed, dry flat, do not iron, do not dry clean Note: Please check sizing chart before ordering. This is Asia size which is smaller than USA size,For more comfortable please choose one size larger than you usually wear. M(24.9"-26.2")L(26.2"-27.5")XL(28.8"-30.1")XXL(31.5"-36.7")