The Boeri Vortex Ski and Snowboard Helmet, new this season, is audio compatible and one of Boeri's most versatile helmets. The Vortex offers revolutionary styling in a light-weight short silhouette in-mold outer shell. The micro-adjustable custom fit dial allows you to zero in on the perfect fit. Whether you're in the park or cruising around the groomers, the light-weight, in-mold construction, and fleece chinstrap cover allow for an unbelievably comfortable fit. With nine passive chimney vents and a removable plug system, the Vortex allows you to choose the exact amount of ventilation you like. The Vortex is also compatible with the Boeri Radioactive Audio Dropliner. Boeri Radioactives not included. Features Short Silhouette In-mold Outer Shell Micro-adjustable Fit Dial Removable Drop Liner Accepts Radioactive Audio Drop Liner Nine Passive Chimney Vents with Removable Plug System Fleece Chinstrap Cover Sublimated Microshell Graphics ASTM 2040 Certified Weight: 14 ounce Please c