1、PC outer shell with frosted treatment, lightweight, hard and durable, easy to clean. 2、With EPS soft padding inside, can effectively absorb the shock and offer optimal protection to your head. 3、18 air holes on the helmet, more breathable and comfortable for you to wear. 4、The chin pad can absorb the sweat and it's detachable, can be removed and cleaned by washing machine. 5、The helmet is adjustable, head girth is about 57-60cm, you can easily adjust it with the knob on the back of the helmet. Features: PC outer shell with frosted treatment, lightweight, hard and durable, easy to clean. With EPS soft padding inside, can effectively absorb the shock and offer optimal protection to your head. 18 air holes on the helmet, more breathable and comfortable for you to wear. The chin pad can absorb the sweat and it's detachable, can be removed and cleaned by washing machine. The helmet is adjustable, head girth is about 57-60cm, you can easily adjust it with the knob on the back of the helmet. Unisex design is suitable for both men and women to use. Good for outdoor sports, cycling, skiing, skateboard, skate, etc. Specification: Material: PC+EPS Color Options: Red; Blue; Black; White Head Girth: Approx. 57-60cm / 22.44-23.62in Weight: Approx. 444g Package Include: 1 x Helmet