Mountain Shades Contra Sunglasses Hit the twisties with confidence wearing the Mountain Shades Contra Sunglasses. These sportwrap shades are crafted from GRS recycled plastic for an eco-friendly build that does not skimp on durability. Features: Frame shape: sportwrap Grip system: anti-slip ergonomic frame Frame material: GRS recycled plastic Lens material: TAC nylon Polarization: polarized Impact rating: Ansi Z80.3 UV rating: 100 UVA / UVB protection