Kanu Surf Men's Mercury UPF 50+ Short Sleeve Sun Protective Rashguard Swim Shirt 86% Polyester, 14% Spandex Imported No Closure closure Machine Wash UPF 50+ rating on rashguards and swim shirts for great sun protection Form fitting rash guard fit, for a looser tee shirt fit, try our swim shirts or size up Matching swim trunks and board shorts available Available in kids sizes 2-16 Quick-dry fabric for more comfort