UPF 50+ rating provides excellent protection against harmful UV rays Quick Dry: Lightweight, yet breathable fabric wicks moisture away from your skin, to be comfortable and fresh all day. Endurance+ fabric built-in chlorine resistance protects the swim shirts against chlorine UV Protection: The fabric rating UPF 50+ protects skin from the harmful UVA/UVB rays, keeping your little guy's stay safe in the sun! No-Chafe Comfort: Flat lock seams and no tag collar minimize friction and offer great comfort. Machine washable Stylish Design: The crew neck design and classic style give it a sleek look This Baby/Toddler Boys Swim Shirt is lightweight and fitted without being too tight, letting your kids have fun at the beach, lake or pool! Stay comfortable and covered in the water with these quick-drying, versatile and lightweight Baby/Toddler Boys SPF Shirts. UPF 50+ fabric blocks harmful UV rays, provides excellent protection against sunburn. Perfect swim shirt for the beach, lake or pool!