S1 Lifer HelmetSpecs:_ÌÔå¢ Specially formulated EPS Fusion Foam_ÌÔå¢ Certified Multi-Impact (ASTM)_ÌÔå¢ Certified High Impact (CPSC)_ÌÔå¢ 5x More Protective Than Regular Skate Helmets_ÌÔå¢ Deep Fit DesignThe S1 Lifer Helmet is one of the best fitting and safest helmets for Skateboarding, Longboarding, BMX and Roller Derby. The Lifer Helmet uses a specially formulated EPS Fusion Foam which allows it to protect your head from multiple low force impacts as well as high impacts. The Lifer Helmet is a Certified "multi-impact" helmet and is up to 5x more protective than the soft foam non-certified helmets.ÌÇ_ The Lifer helmet is a break through design combining the added safety of a CPSC and ASTM certified helmet with the comfort and fit of a non certified helmet. The S1 Lifer Helmet is the best fitting High impact and Multiple Impact helmet on the market.