Big things come in small packages, and the same holds true for the IO S Goggles. Crafted with a sleek, minimalist design, theyre packed with the technology you need to handle changing conditions on the mountain. Spherical Carbonic X lens. 5XTM anti fog inner lens for clear visibility. TLT Optics offers crystal clear vision. 3 layer DriWix face foam for ventilated comfort. Rotating outrigger positioning system for easy helmet integration. QuickFit strap adjustment system with clip buckle. Wide silicone backed strap for stay put fit. Quick release lens change system. Includes bright light and low light performance mirror lenses. Womens medium fit. Helmet compatible. Available in Asian fit. Microfiber goggle bag with replacement lens sleeve.