With the i31 jet helmet, HJC is bringing a new lightweight scooter helmet onto the market. The helmet has a robust polycarbonate outer shell. Inside the open face helmet there are removable and washable head and cheek pads. It also has a sun visor with a side slider for sunny days. Technology APC» Advanced Polycarbonate Compound : By blending high-grade polycarbonate with high impact strength and ABS in an optimal ratio, HJC has developed a shell that is both strong and impact-resistant while maintaining a lightweight design.