Features1Adopting ONE STEP technical materials and EPS plus impact resistant composite materials, with good impact resistance and abrasion resistance 2The wind tunnel design effectively reduces wind resistance and allows air to pass through the helmet to keep the rider cool 3The material has the characteristics of lightness, which feels very easy to wear, and will not feel heavy on the head 4There is an adjustment knob inside, which can adjust the size of the head circumference according to your needs, suitable for more people 5Suitable for various road and mountain biking activities, and also suitable for daily cycling useSpecificationItem Type: Bike HelmetProduct Size: Free SizeScope of Application: Suitable for Head Circumference Approx. 58-61cm/23-24in, Head Width Approx. 16cm/6in and BelowPackage List1 x BikeHelmet