Costyle Black Gray Myopia Retro Polarized Clip-on Flip-up Plastic Sunglasses Driving Fishing Outdoor Sport-5.3X2.4X1.4 INCH 100% UV protection High Quality metal frame Soft rubber Legs have proprietary coating to protect ophthalmic lenses and prevent shifting and scratching New design leg profile to fit both metal and plastic frames Convenient one hand application to Prescription frames with positive indexing lens positions