Mips brain protection system The boa system lets riders easily secure & adjust helmet fit with one hand Blendr mount system easily integrates gopro camera & bontrager lights accessories Drop-in coverage on back of helmet offers extended protection In-mold composite skeleton increases helmet integrity for larger vent variations Flatlock dividers make helmet strap management simple through fixed position fit Internal, recessed channels move airflow over your head to stay cool & dry Crash replacement guarantee provides a free helmet replacement if involved in a crash within the first year of ownership