Maintain optimal visibility while heading down the mountain with the IO X Interchangeable Goggles. Crafted with a spherical carbonic X lens and a strategic, frameless design, these goggles maximize your peripheral views while providing clear, anti glare and fog free visibility of your surroundings as you make your descent to the base. Spherical Carbonic X lens with TLT optics for distortion free view. Vaporator Lens Technology features Porex filter and silicone seal for reduced fogging. 5X anti fog inner lens features a hydrophilic, micro etched surface to prevent fog. Frameless design provides unrestricted peripheral visibility. Quick release lens system for easy lens changing. Triple layer DriWix face foam with fleece lining for a soft, smooth seal. Wide silicone coated strap with QuickFix strap adjustment. Seamless helmet integration. Eyeglass compatible. Fits medium to large faces.