Smith Optics I/O Goggles Includes Two Performance Mirror Lenses and Microfiber Goggle Bag with Replacement Lens Sleeve Medium Fit and Helmet compatible Spherical Carbonic-X Lenses with TLT Optics, Patented Evaporator Lens Technology with Porex Filter and 5X Anti-Fog Inner Lens Ultra-Wide, Silicone Backed Strap and Quick Fit Strap Adjustment System Includes Two Performance Mirror Lenses and Microfiber Goggle Bag with Replacement Lens Sleeve Manufacturer's Lifetime Warranty