This set has a black plastic rim and yellow green glass lens with a wire connecting the two pieces. I believe they snap on with the plastic side attachments. It has the original leather case that is not in the best of shape but the sun glasses themselves are in very good condition. Overall dimension of clip on is 4 ½” at most with each round lens at 1 ¾” across. Check out the pictures to this interesting pair that could easily worn on your glasses today.