Featuring a removable (easily snaps in and out) Facial Cavity Seal gasket, these sunglasses completely seal out peripheral light, dust and pollen for long-lasting comfort and protection in high speeds or wind, and other outside hazards. ANSI Z87.1-2003-certified for exceptional optical quality and shatterproof resistance. Each pair includes a "T-Peg" adjustable elastic strap, leash cord, cleaning cloth and zippered nylon case.