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