Tree Tribe Polarized Bamboo Sunglasses -Elatas Clubmaster Style + Hard Case Bamboo frame Composite lens Polarized Lens width: 53 millimeters POLARIZED LENSES - Provide crystal clear vision with UV400 protection and a scratch resistant coating. 53mm x 42mm lens. UNIQUE BAMBOO FRAMES - Crafted with 100% real bamboo frames, so every pair is different - unique wooden vibe. FLOATING SUNGLASSES - Because of the porous nature of bamboo, these sunglasses float in water! VINTAGE STYLE - Natural variation of a classic frame style. Frame size: 145mm front width x 150mm length x 46mm height (5.7" x 5.9" x 1.8"). WE PLANT TREES - On every sale, we plant 10 trees. Tree Tribe is all about the Earth and coming together as a community. We're partnered with non-profit tree planting organizations to help us in our mission of improving the health of the planet.