SERENGETI Women's Sunglasses plastic frame Glass lens Non-Polarized Lens width: 62 millimeters Bridge: 18 millimeters Arm: 130 millimeters Photochromic lenses constantly adjust to changing light conditions Spectral Control diminishes haze and distracting glare, enhances contrast and sharpens your vision 100% UVA/UVB Protectant, Ultra-Light Glass Lenses Handcrafted Acetate and Spring Hinges