High impact ABS shell with EPS liner 13 radiating vents with ballsitic Nylon mesh Fixed soft, full coverage earpads ASTM F2040 and CE EN1077 in Europe certified Weight 19 oz 525 g The Giro Recruit84822 Ski and Snowboard Helmet for Kids has skate styling and pro level feel, with the durability that young park and pipe riders want. The Recruit84822 is a great choice for riders who are coming up fast. The Recruit84822 offers a high impact ABS shell with EPS liner. EPS offers the most consistent performance across a wide range of conditions, and gram for gram, it absorbs more impact energy than other liner materials. The ventilation includes 13 radiating vents with ballistic Nylon mesh. The earpads are soft, full coverage earpads that offer warmth without compromising hearing.