Bontrager Quantum MIPS Bike Helmet is a great all-rounder helmet with MIPS technology (multi-directional impact protection system) providing ample protection whilst looking great. MIPS was developed by brain surgeons & scientists to look at reducing the impact on the head & brain from all angles. In-mould composite skeleton is the term used for the mould of the helmet & in effect it allows for larger ventilation without reducing the integrity of the shell. The Boa system helps provide additional fitting to ensure a secure & comfortable fit. Great ventilation makes the Quantum ideal for urban & trail riding. Removable helmet pads provide wicking. Snap on visor allows for style & function. Features MIPS Brain Protection System The Boa® 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 Removable snap-on visor & port covers provide multiple looks to fit your style Lock Down dividers make helmet strap management clean & easy to adjust The Crash Replacement guarantee provides a free helmet replacement if involved in a crash within the first year of ownership