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 - Mips® Rotational Impact Brain Protection System - EPP chin bar - Three shell sizes to more accurately fit a variety of head sizes and rider ages - Anatomical 3D contoured cheek pads with emergency release system for EMS responders - Plastic visor screws and brass inserts - Stainless steel D-rings - Includes Troy Lee Designs helmet drawstring sock