Castelli UPF Cycling CapCastelli’s UPF Cycling Cap is all about keeping your head protected from the sun’s rays. Traditionally styled, it also boasts an Ultraviolet Protection Factor of 50+, blocking 97% of harmful UV rays.Slip on the UPF Cycling Cap when the skies are blue and the sun is high in the sky. The stretch polyester construction deals with any moisture build-up incredibly well, leaving you feeling drier and more comfortable as temperatures rise. And with the excellent sun protection, you’ll be safer from the harm of sunburn during your long-distance summer rides. Features:Materials: 86% Polyester, 14% ElastaneUPF 50+Classic Castelli fit and comfortOne size fits allBuy Castelli Clothing from Chain Reaction Cycles, the World’s Largest Online Bike Store.