Glasses Horsefeathers Zenith - matt black fade out / mirror blue 2021 FRAMES: Lightweight and durable material TR90 Metal logo and joints Frame shape with curvature 8 for easy grinding of dioptric spectacle lenses GLASSES LENSES: High quality polarizing TAC lenses Thickness 1.1 mm 100% UV protection Protects against glare, improves contrasts, maintains color fidelity DIMENSIONS: eyepiece diameter 64 mm, beam width 18 mm, side length 120 mm Solar