Fuse Lenses for Costa Del Mar Tuna Alley Plastic frame Plastic lens Polarized lenses Lens width: 63 millimeters Fuse Glacier Mirrored Polarized Lenses. Bright Blue Metal Mirror Coating over an amber lens base. Warm amber view. Amber tint gives true color perception. Cuts through blinding glare. Enhanced depth perception. 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.