G Flip Up, clip-on sunglasses - "larger frame styles" Our "patented, all metal" flip up mechanism securely clips to the top of your plastic or metal frame, allowing you to obtain, 100% UV protection with our superior polarizing lens system. In addition, our polarized lenses are also highly scratch resistant. Our patented flip up mechanisms are all. metal, and is coated with a vinyl clip coating system that protects your lenses by preventing slippage and scratching.