K2 is the first manufacturer to introduce a fully integrated patent pending helmet and goggle system. Designed in cooperation with the world's leading industrial design team at BMW DesignworksUSA, K2 has successfully combined a state-of-the-art helmet with proprietary goggle technology gained through the new acquisition of V2 Optics. The result: The Black Hawk One. Features: TMI Construction, Integrated Helmet Goggle System, Active Channel Venting, TPR Interface, MX Portal for Visor, Removable Head and Ear Liners, Plush Helmet Bag. Construction: Combination ABS, PC, TPR with EPS, Integrated Helmet-Goggle System sold with The ONE Integrated goggle system.