100% Bamboo Sunglasses Women Men Polarized Lens Wood Glasses Bamboo frame Resin lens polarized Lens width: 53 millimeters Lens height: 42 millimeters Bridge: 12 millimeters Arm: 142 millimeters Reinforced metal hinges. The sunglasses is light and can float in water,Because of the porous nature of bamboo. They're made with actual bamboo, so every pair is different. Provide crystal clear vision and anti-glare effect with UV400.