This snow helmet is designed with signature AirEvac™ ventilation and a fleece lining for enhanced breathability and comfort when you're out on the slopes. The helmet features a Multidirectional Impact Protection System, or MIPS, which uses slip-plane technology inside the helmet to reduce rotational forces that can occur in certain impact situations. Complies with ASTM F 2040 and CE EN 1077:2007 alpine ski and snowboard helmet safety standards Lightweight, durable in-mold construction AirEvac ventilation integrates with Smith goggles (sold separately) for fog-free lenses Nine fixed vents for consistent air flow Self-adjusting lifestyle fit system flexes to match your head shape Removable, machine-washable Snapfit SL2 Ear Pads compatible with Aleck™ audio systems Removable goggle strap lock Fleece tricot lining Polystyrene/polycarbonate/ABS Imported