The Clarity Fog Eliminator dry towelettes are effective in preventing eyepiece fogging. Save your batteries: You no longer have to use those power-hungry eyepiece heaters. Works on all motion picture film cameras and video cameras. Breakthrough DRY anti-fog formula beats the others cold. Perfect for all outdoor sports. Who wants to be slowed down by fogged lenses? Clarity Fog Eliminator is the convenient, effective way to eliminate fogging due to cold temperatures and moist or high-humidity conditions. Get streak-free, film-free, longer-lasting fog prevention on: Sport goggles - Hockey masks - Eyeglasses - Sunglasses - Camera lenses - Binoculars - Scopes . Easy to use...fits in pocket, backpack or sports bag. Just wipe the dry cloth over the lens. No sloppy sprays or goop. Multiple applications from each cloth. And all products come in a reclosable vinyl pouch. Clarity Fog Eliminator 3-packs. Three times the anti-fog protection in a reclosable vinyl pouch.