MIPS Brain Protection System. Intuitive, one-handed Headmaster fit system adjusts height and circumference. Built-in and removable visor options give you two choices for constant coverage. LockDown dividers make helmet strap management clean and are easy to adjust. Internal, recessed channels move airflow over your head to stay cool and dry. Reflective elements on back of helmet for enhanced visibility. Soft, comfortable, moisture-wicking and washable helmet pads for added comfort. Crash Replacement Guarantee provides a free helmet replacement if involved in a crash within the first year of ownership.