OK, not the same pair of Chums. I usually get a couple years out of a pair, but these synthetic polyester ones last until you just can't wash the funk outta, about 5 years. I work and play outside year round, and wear my sunglasses, and Chums, pretty much every day of the year.
My one hope is that the tail-less model is available in this polyester material.
Originally purchased for a white water rafting trip so I didn’t lose expensive sunglasses. Chums are great for everyday use. Great for rollercoasters and motorcycles.