Complete Koroyd coverage for lightweight, energy-absorbing and ventilated impact protection, MIPS Protection System reduces rotational forces caused by angled impacts to the head. Three washable cheek pad kits, two crown liners and two neck rolls let you fine tune the fit. D-ring chin strap fastener for a snug fit. Designed for ultimate integration with Smith performance goggles for maximum comfort, venting and storage convenience. Complete Koroyd coverage for lightweight, energy-absorbing and ventilated impact protection MIPS Protection System reduces rotational forces caused by angled impacts to the head. Three washable cheek pad kits, two crown liners and two neck rolls let you fine tune the fit. D-ring chin strap fastener for a snug fit. 21 fixed vents for consistent airflow.