New standard 23 The foam is included in the price of the helmet. If you need to change the foam, order the foam GPA Premium OUTER SHELL: injection molded from thermo-composite resin that limits the risk of perforation. With its front openings and rear extractors, this helmet offers optimal ventilation. INNER SHELL: shock-absorbing element made of expanded polystyrene with variable density that dampens and distributes shockwaves. INNER FOAM (LINER): comfort foam coupled with a soft, antibacterial fabric. Made in one piece, it is interchangeable and washable thanks to tabs that fit between the two shells. VISOR: made from thermo-composite elastomer resin that gives it a certain flexibility according to the required standards. Why choose the HYBRID chinstrap? For fans of the soft chinstrap Better support and optimal safety with greater protection coverage, especially at the nape of the neck Maximum comfort thanks to the new interior A new two-part fastening buckle that is very easy to attach and detach, safely.