Smith Optics Knowledge OTG Goggle Large Fit and Helmet and Eyeglass compatible Spherical and Cylindrical Carbonic-X lenses with TLT optics, Porex Filter and Fog-X anti-fog inner lens Articulating and Ergonomic outrigger positioning systems with Ultra-Wide, Silicone Backed Strap Includes Microfiber Goggle Bag Manufacturer's Lifetime Warranty