Ed S.
Defect of materials
i have only worn them a few times but my costa harpoon lenses have weird horizontal lines running through them. They appeared after I had used them hunting, never dropped and always placed in a case. I am out of warranty period but, why buy something that only is good for a year?? I have a pair of coasta Isabella replacement lenses that I got from amazon (china). they are 3 years old and going strong. What gives.

