Clip on Flip up Polarized Polycarbonate Plastic Sunglasses, Rectangle, 58mm Wide X 47mm High (131mm Wide), Brown Lenses New lower profile squeez to open clip New leg profile to fit both metal and plastic frames and legs have proprietary coating to protect ophthalmic lenses and prevent shifting and scratching Polarized; 100% UVA and UVB protection Convenient one hand application to RX frames with positive indexing lens positions Comes with firm sunglasses box for safety daily storage