Light on weight but not on protection, the 1500g SE4 Polyacrylite incorporates the Mips brain protection system with safety features such as 3D cheek pads designed for emergency removal, break-away plastic visor screws, and an EPP chin bar. With 16 intake ports channeling airflow through 6 exhaust ports, SE4 continues to be at the head of the pack for safety and comfort.