I Did not Flip for the Flip-Up
Optically these clip-ons do the job well. However, the sizing guide, while correct as to width produced a pair of clip-ons that were a little small as to height. Since the edge of the clip-ons does not extend a little past the bottom of my frames, I have to smear my glasses to flip the clip-ons up. I also find that the attachment/flip-up assembly intruded into my field of vision. All things considered, I would prefer a non flip-up design.
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