Review on 👓 2020 Fashion Transition Men's Bifocal Reading Glasses with Business Sun Photochromic Lens - Metal Frame for Presbyopia (Black, 0.00/+2.50 Magnification) by Emily Mason

As for the BI/TRI function - focus, they seem to work well. Glasses in stock, 2 pairs are stated in the ad (I think this is to show the darkening of the lenses in the light). The glasses do not darken significantly in the sun. The frames are very flimsy and I expect them to break soon. The hinges are very stiff and don't seem to get any better over time. I won't buy this again. If they were a lot cheaper I would consider it but as it stands I won't be buying them again