Description of Boeri Tactic Carbon Helmet w/ Audio Hybrid technology at it's best. The Tactic returns with the same great fit and protection but all new bold colors and graphics. Boeri's patented Head-Loc Occipital Retention System continues to provide the exact fit you need every time you're on the hill. Features: Hybrid Design - In-Mold w/ hard shell halo Patented Head-Loc system Removable drop liner and chimney vent plugs for additional ventilation Front and rear adjustable active ventilation Radioactive T audio included