Comfortable Ultra-Lightweight Frame - Made of durable TR90 and Premium metal material, its strength, ultra-lightweight comfort, shape integrity, and impact resistance. Use the upgraded nose pads design, will not oppress the nose bridge. It'll give you a stress-free wearing experience.
9 Layers' Coated Lens - TAC lens includes 9 layers. The 1st layer is anti-scratch and strengthening film which protects the lenses surface. The 2nd and 8th layers are bonding layers to enable durability. The 3rd 、4th 、6th and 7th layers are UV protection layers to absorb UV light. The 5th layer is the UV filter membrane. The 9th layer is a compressive strengthening layer protection film.