The S1 Lifer Helmet is constructed with Fusion Foam and is 5x more protective than soft foam skate helmets. The S1 Lifer Helmet is certified to help protect your head from low force multiple impacts (ASTM Standard) and single high impacts (CPSC Certified). We batch test every production to make sure the S1 Lifer Helmet meets and/or exceeds current helmet safety standards. Whether you like to ride a skateboard, bike, roller skates or scooter (non motorized) you know you are wearing the best. Great fit, Lightweight and Certified Protection = S1 Lifer Helmet.