Amazon.com: FEISEDY Magnetic Clip on Sunglasses TR90 Square 。These are Vintage Innovative M/F Technology Eyeglasses Frames IMF512 in Black & Crystal with matching clip-on sunglasses. No need to remove your glasses to attach the matching sunglasses; the strong magnets clip right on securely. The oval-shaped metal frames offer both functionality and fashion. The black color adds a touch of sophistication. Style #IMF 346. Size is 50-17-140. Measures 4 3/4” across front and about 1” depth. Mint condition. A vintage find that is classic in style. Clear lens is for demo purposes, & serves as a pattern for creating your own prescription. The sunglasses are Plano (no Rx). Tru-gray color sunglasses. Adjustable nose pads for perfect fit. The hard case stores the clips safely when not in use.