SuperThin glass lenses are 20% thinner and lighter than standard laminated glass 3 rare earth elements enhance color contrast and clarity for beautiful views and stunning protection from glare Blocks 100% of harmful UVA, UVB and UVC rays Acetate frame with double-injected metal and rubber temples has thinner sides for light weight and easygoing style Best fits medium size faces; complements round, oval and heart-shaped faces Saddle style fixed bridge; traditional pin hinges Waterproof and oleophobic coating sheds water and snow, and repels grease and smudges