Ray Ban Rb3301 Square Sunglasses - Frame Type: Unisex Classic , Frame Material: Metal, Lens Type: Non Polarized Glass, The best-selling brand of sunglasses worldwide! The reasons are obvious: the comfort & durability of each lightweight frame (metal, acetate or nylon) is unmatched, and the scratch/impact-resistant lenses ensure 100% UV protection & superb optical clarity. Adjustable nose pads