SHINU Wooden Sunglasses Retro Round Bamboo Frame Glasses Gradient Lens-5006 Imported bamboo frame non-polarized Lens width: 51 millimeters Bridge: 20 millimeters Arm: 142 millimeters Genuine Wood Bamboo from Sustainable Resources. CR39 UV400 Lenses Against Harmful UVA/UVB Rays. Imported with CE,FSC,FDA,SGS certifications. Lightweight in Design and Water Resistant. Each Pair Comes In Its Very Own Bamboo Case and Microfiber Pouch to Protect and Keep Your Glasses Clean.