The Goggle One is designed to integrate perfectly with our adult sized helmet models. The large spherical shaped dual-lens offers expansive peripheral and downward vision. The inner lens is made of anti-fog treated CA, and a triple layered, fleece face foam maintains comfort while wicking away sweat during all-out sessions. A complimentary bonus lens delivers better vision during bad weather conditions.Feature LensSpherical Dual-Lens Anti-Fog inner lens Anti-ScratchMaterial33% TPU (frame) 10% PC (lens) Acetate 5% (inner lens) 12% Polyester (foam) 34% Nylon (strap) 5% PC (bu