Sun trying to bully you back indoors? Give UV rays the cold shoulder. Lightweight, cooling rashguard fabric shields us from overdosing on Vitamin D; rated at UPF 50, this versatile top lets us run, bike, hike and kayak carefree all summer long. By Carve Designs. XS(2), S(4-6), M(8-10), L(12-14), XL(16).