Boeri's latest approach blends an in-mold microshell with hardshell components to produce an extremely durable ski and snowboard design. Seven plug-activated, heat-dissipating chimney vents on top, plus four shut-off vents in front, combine to create a multitude of air-flow options. Head-Loc revolutionary self-adjusting occipital-lobe retention system improves overall helmet fit, comfort, and safety, without additional weight or inconvenience to the user. Removable liner. Fleece chinstrap cover. One-piece ear and neck cover. Compatible with Radio-Actives audio system components. Meets ASTM 2040 and CE-1077 standards.