After years of using cheap Walmart fishing glasses that were polarized and had cheaters, I upgraded to the Smith bifocals. Much better optical quality. I am able to see fish in the water that I couldn't before. The copper lenses are great for any condition. The bifocals are a must for me when trying to tie on small flies. Included retainer strap keeps the glasses secure. This is a good price for a great pair of glasses. I bought a second pair for everyday use.