I bought them to protect my sunglasses and they do it for very little money. If they survive - if they don't warp easily, or if the zippers don't break and unzip easily - then I think they're a good buy.
Oakley Flak Jacket XLJ Sunglass Replacement Lenses & Sock Kit By BlazerBuck
39 Review
Walleva Replacement Lenses Batwolf Sunglasses Men's Accessories
46 Review
Garment Washed Cotton Twill Mesh Cap For Big Heads By E4Hats.Com
45 Review
Enhance Your Eyewear: Mryok Polarized Replacement Lenses Tempo - Find the Perfect Fit!
34 Review