The S1 Lifer Helmet is one of the safest, best-fitting helmets, featuring EPS Fusion Foam for protection against both low and high-impact forces. Dual certified and up to 5x more protective than non-certified helmets, it’s the #1 bestselling dual-certified helmet in the USA. Lightweight, CPSC certified, and trusted by pros, the S1 Lifer Helmet is designed to disperse energy and keep you safe in any situation.