Swell Vision Male Bamboo Wood Rectangular 52mm Polarized Sunglasses Composite frame Composite lens polarized Lens width: 52 millimeters MAKE A STATEMENT - You can feel good about the Acidosasa bamboo material these products are made from - a renewable resource. But let's face it, as "green" as you may be, that doesn't mean much if your sunglasses aren't attractive or don't fit. That is the beauty of Swell Vision Sunglasses. Stylish and environmentally responsible, the Swell Vision sunglasses make a statement. A fashion statement AND a sustainability one. CLASSIC STYLE - These will never go out of style! Classic with clean lines. The spring loaded hinges help the glasses stay put and make them less likely to get broken due to that additional flex. The natural beauty of the bamboo comes out with the natural finish. POLARIZED LENSES - In addition to style, these sunglasses deliver "shade" with their polarized lenses that are anti-glare and offer UVA/UVB protection. Lenses are a fun blue color that really provide a pop! UNIQUE - These sunglasses are waterproof - and they float! SIZE - Frame is 52 mm wide and 37 mm high. The temples are 135 mm.