Here's what other sites are saying:
Use the Von Zipper Feenom Goggle Replacement Lensas a backup option for variable light conditions or to breathe new life into your eyewear that you scratched up bushwhacking forpow stashes. These lenses fit the Feenom frame's spherical shape and won't fog up thanks to front venting.
Description of Von Zipper Feenom Replacement Lens - YellowSo many choices for your Von Zipper goggles, why not just have an assortment for every kind of day on the mountain.
- US Outdoor Store