Glasses Horsefeathers Merlin - matt black / mirror blue 2021 FRAMES: Lightweight and durable material Metal logo and joints Frame shape with curvature 6 for easy sharpening of dioptric spectacle lenses GLASSES LENSES: High quality polarizing lenses Thickness 1.1 mm 100% UV protection Protects against glare , improve contrasts, maintain color fidelity DIMENSIONS: eyepiece diameter 58 mm, beam width 17 mm, side length 145 mm Sunglasses are