Adult Helmet/Cycling Helmet/Biclycle Helmet Cover/Headguard Protection/Head Protector/Bike BMX Helmet Hat Skiing Skateboarding Scooter Protective Helmet Material:Housing:high quality 0.8mm PC + silk printing; Inner casing:gray 85EPS (high-density foaming / imported materials) integrally molded. Size: 26 x 21 x 12cm,Weight:240g,Head Circumference:56-63cm/22-24.8inch. Adjustable webbing ensures a comfortable fit for your head,Comfortable cushion lining High-sided article black velvet for shockproof. Features:streamlined design, anti-windage, lightweight, strong, 18-hole breathable big holes, with visor, comfortable lining, with regulator. Protect your head well from wind, rain, dust and other possible hurts from outside when you are cycling, skiing, skating etc.