Mountain Shades Lacuna Sunglasses Cruise down the highway in timeless style with the Mountain Shades Lacuna Sunglasses. These classic aviator shades are built with a sturdy nickel alloy frame and an anti-slip ergonomic design that ensures they stay securely on your face while you ride. Features: Frame shape: aviator Grip system: anti-slip ergonomic frame Adjustability: adjustable nose bridge Frame material: nickel alloy Lens material: TAC nylon Polarization: polarized Impact rating: Ansi Z80.3 UV rating: 100 UVA / UVB protection