GripGrab Lightweight Summer Cycling Cap UV Protection Bicycle Hat Retro Fly Underhelmet Under Helmet

Updated model - Thanks to the reviews of the first model from 2017, we have revised the rad cap; it is now available in two sizes S/M (54-59 cm head circumference) and M/L (57-63 cm) Fits comfortably under the helmet - Designed as a bicycle helmet undercap, this lightweight and thin classic summer hat can be worn comfortably under a cycling helmet and offers UV and sweat protection Avoid sunburn - This lightweight cycling cap with UPF 40+ is your UV protection when cycling in the summer sun; UV rays can be harmful to the skin, so you should protect yourself No overheating - Designed for use in hot summer as protection against sunburn on the head, the thin mesh material of this visor cap is highly breathable and prevents heat build-up All-rounder - Sweat is kept away and cools your head in summer; thanks to the elastic rubber on the back, the UPF peaked cap sits securely under your helmet and at the café break