The concept is great. When I did wear these they were perfect BUT the quality of these are so poor that I will never buy them again or recommend them to anyone.  I went through FOUR pair.  EVERY one of them broke at the exact same point. The right hinge broke after around 30 to 40 days of daily use. CLEARLY a manufactures defect if ALL of them do this in the same manner. At $35.00 each, I can’t afford to keep replacing them. I started with the wire frame then switched to the heavy plastic frame thinking the wire was just to delicate. They all did the same thing.