Increased shock-absorption and breathtaking ventilationThe outer shell in thermoplastic resin minimises the risk of perforation in the event of a fall. The inner shell, made of expanded polystyrene, damps and spreads the shock of the impact over the entire helmet. Thanks to its front vents and rear outlets, this helmet offers optimal ventilation.Unparalleled comfortThis new one-piece, and removable, liner can be washed and replaced where necessary. The soft and fluffy liner has received an antibacterial treatment.Better neck protection and reinforced hold.The classic chinstrap is replaced by a hybrid system. Unique to GPA. The rear part of the chinstrap, which is a cross between the twin lock system and the traditional chinstrap, is a composite of thermoplastic resin and glass fibre fabric. Its synthetic leather-covered nylon straps fasten with a two-part buckle. Thanks to its rigid part at the back extending the shell, the hybrid chinstrap guarantees greater protection and a better ho