The MT500 Full Face Helmet deploys advanced energy absorber, Koroyd to provide additional impact resistance while keeping weight to a minimum, this new big hitter delivers certified full face protection that can be worn all day long. Now Incorporating the MIPS Brain Protection System which is designed to reduce rotational motion transferred to the brain from angled impacts to the head. MIPS Brain Protection System which is designed to reduce rotational motion transferred to the brain from angled impacts to the head. Endura/Koroyd Helmets use 3D formed Koroyd inserts for enhanced airflow and improved energy absorption in an incredibly lightweight package. This creates the most breathable and lightweight helmets on the market while also providing superior impact protection over standard construction High performance downhill style full face mountain bike helmet MIPS Brain Protection System reducing multi-directional Impacts Full integrated Koroyd core for superior energy absorption Large