Fuse Lenses for Prada SPS 56H (59mm) Plastic frame Plastic lens Non-polarized lenses Lens width: 59 millimeters Fuse G15 Tinted Lenses. G15 was first developed for military pilots. Green/Grey view. Enhanced depth perception. Non-polarized lenses. Completely block harmful UV rays, providing 100% UV protection Fuse Force scratch resistant hard coating Lens Category 3, Ideal for Bright Light Custom Made to easily interchange with your current sunglasses.