Exceptional Protection with Two-Way Adjustability. Independently lab and rider tested, proven to reduce neck forces and neck injuries through transferring the load during an accident away from the fragile bones in the neck. Up to 89% reduction in critical cervical spine injuries. Collarbone injuries up to 45% MORE likely WITHOUT a neck brace - Independent Moto motorcycle study by Action Sports EMS. Engineered collarbone cut-out to keep your helmet rim away from your most fragile bones. Optimal helmet rim striking platform is designed to redistribute neck forces and provides the helmet with freedom of movement. CoreFlex split rear folding thoracic strut is designed to work with the body's natural movements for a more comfortable fit and break away before applying excessive pressure to the back. Two-way adjustability for the rear to ensure a great fit.