Motorcycle Biker Goggles Over Glasses with Polycarbonate Safety Smoke Lenses. Extra Large Microfiber Cleaning Case Included. Tiger Impact resistant Polycarbonate lenses (same material used in helmet visors) Thicker, softer and dual layer foam Adjustable strap with easy "Snap Catch" for all head sizes Air Vents to prevent fogging FREE deluxe Extra large microfiber cleaning case with each pair ($8 value)