●Size: 56-61 cm / 20-24 (inches): Our cycling hat under helmet is available in this size and offers optimal wearing comfort when cycling. ●Avoid sweat in the eyes: cycling cap absorbs sweat and prevents unpleasant burning in the eyes. ●Protect your head from wind, rain and UV radiation during your bike tours. ●Our bike cap, also known as a bicycle cap or cycling cap, is a must-have for any avid cyclist. ●UNISEX - Whether man or woman, our cycling cap fits everyone and is a great eye-catcher on the road.