Signature helmet from rider Lizzie Armanto (video below) for a great price . The manufacturers describe the helmet as: " The Holy Grail of Comfort and Protection ". The helmet consists of EPS foam with high absorption and soft fabrics. Thanks to many conveniences, the helmet has received two certificates : US CPSC 1203 Bike and ASTM 1492/1447 Skate (certificate for bike and skates). The helmet does not contain a wheel to adjust the size . The type of inner filling is EPS - expanded polystyrene. And the type of outer shell is ABS.You get extra resize pads for each helmet. With the purchase of the Triple Eight Certified Sweatsaver helmet, part of the proceeds will be donated to the Tony Hawk Foundation, which helps build skate parks!