OPTX 20/20 Stick On Magnification Reusable Bifocal Lenses - +2.50 Diopter by Hydrotac

They work well with my sun glasses.

Used for my sunglasses on vacay. They lasted great the week. Can remove, clean and replace. I could read my book out in the sun and shop with sunglasses on. They are not as perfect as bifocals but they are good enough.

I’ve used this product/brand for years. One set of magnifiers out lasted a pair of sunglasses I owned. They are plastic so they aren’t perfect optically but pretty darn close. I put them inside all my sunglasses and have owned at least six pairs. No trouble putting them on once you try it a few times. It helps washing the glasses with running hot water, applying while warm and once the lenses are where you want them let it air dry. A little soap and water will release and you can reuse them. Highly recommend.

I had no luck with these. For me it did not work out. I waited too long. When I opened it , itcwas dried out.

I should have read the previous review that mentions this. I assumed from the photos and the packaging that this would be two lenses. When I opened the package I kept thinking I had dropped one of the lenses. Who wants a monocular bifocal?