Amazon.com: Salvatore Ferragamo Grey gradient Oval Ladies 。These Salvatore Ferragamo SF668S 238 57-17 125 are an oversized oval style woman’s designer sunglasses featuring a dark tortoise frame and brown gradient lenses. According to many retailers these sunglasses are part of a premium Italian crafted series noted for its lightweight comfort and 100 percent UV protection. The frame dimensions are 57mm lens width, 17mm bridge width, and 125mm temple length. Made of premium quality acetate and CR-39 polycarbonate lenses. These frames are compatible with bi-focal or progressive prescription lenses.