BIRCH's Classic Teardrop Metal Pilot Aviator Double Bridge Flex Hinge Sunglasses (Brown) metal frame plastic lens non-polarized Lens width: 63mm BIRCH (a registered trademark) +++ Please note that BIRCH is a registered trademark. GIFT OZ is the ONLY AUTHORIZED SELLER of our products. Please make sure to buy from GIFT OZ to ensure you receive the accurate item. BIRCH is not responsible for other sellers selling a different, inferior quality of our products.+++ Classic Teardrop Full Metal Aviator Sunglasses with Unique Double Metal Bridges & Flex Hinges Flex Hinges Sunglasses: Easier to Put On and Off from Your Face A Great Touch for Your Perfect Look Lens Width: 63mm, Lens Height: 55mm, Bridge: 10mm, Total Height: 58mm, Total Width: 145mm