●Helmet with excellent breathability with a smart design and wide ventilation holes to reduce unpleasant stuffiness ●One piece with excellent shock resistance, lightweight and comfortable to wear for long periods of time ●Adjustable helmet can be used by both men and women. Adjuster dial can be easily adjusted according to the size of the head ●Ideal for bicycles, skateboards, and kickboarding. Safety Standards Compliant. SG certified ●Compatible Size: Approx. 22.8 - 24.0 inches (58 - 61 cm); Weight: Approx. 10.6 oz (300 g); Material: PC shell + high density