Mips brain protection system Boa closure system lets you easily secure & adjust helmet fit with one hand;the in-mould composite skeleton increases helmet integrity & provides larger vent variations The helmet pads are soft, comfortable, moisture-wicking, & washable Internal, recessed channels move airflow over your head to keep you cool & dry The removable snap-on visor & port covers provide flexibility to match your style Easily-adjustable lockdown dividers provide clean helmet strap management Crash replacement guarantee provides free helmet replacement if involved in a crash within the first year of ownership