evo.com | Bell Helmets > Adrenaline junkies, meet your new best friend! The Bell Full-9 Fusion MIPS Bike Helmet is the superhero suit for your noggin. This bad boy is tougher than a titanium burrito and more ventilated than a wind tunnel. With its fiberglass shell, it's like wrapping your head in a cocoon of indestructibility. Fiberglass Shell with EPS Liner Overbrow Ventilation(TM) Actively ushers cool air over the head and regulates temperature by drawing cool air into the intake ports and circulating it through a matrix of air channels. Complies with the US CPSC Safety Standard for Bicycle Helmet for Persons Age 5 and Older MIPS(R)-Equipped MIPS stands for Multi-Directional Impact Protection System, which is a leading slip-plane technology inside the helmet designed to reduce rotational forces that can result from certain impacts. ASTM F-1952-15 (DH), ASTM F2032-15 (BMX) | Bell Full-9 Fusion MIPS Bike Helmet 2023 - Large in Yellow