u/bramletabercrombe

I have a thin strip of metal on the ridge of my glasses (2mm wide) and I want to buy some thin black magnetic strips to glue to sunglasses lenses so I can clip them on when I need them instead of buying prescription sunglasses. I'm looking for something thin and strong enough to hold them in place and not so thick to hinder my vision. what would be the best strip to buy? If I buy the kind that can be cut with a scissors will they be strong enough to hold