S1 Lifer Certified Skate/Bike Helmet Specs: Helmet comes with extra sizing liners for multiple sizing options Specially Formulated EPS Fusion Foam Certified Multi-Impact ASTM F-1492-15 Safety Compliance Testing for Skateboarding and Roller Skate Helmets Certified High Impact CPSC 16 CFR Part 1203 Safety Compliance Testing for Bicycle & Skate Helmets 5x More Protective Than Non-Certified Soft Foam Skate Helmets Deep Fit Design
