Our secret to lengthening time on the water? Give UV rays the cold shoulder. Lightweight, cooling swim fabric shields us from overdosing on Vitamin D thanks to UPF 50 coverage that won’t wash off--unless we wipeout so hard, we lose this top. Classic next-to-skin rashguard fit. Ruched sides. Nylon/spandex. UPF 50. XS(0-2), S(4-6), M(8-10), L(12-14), XL(16).