ZEISS pre-moistened lens wipes safely and quickly clean eyeglasses and sunglasses plus other optics like camera lenses webcams binoculars and microscopes. Specially formulated with a unique gentle cleaning solution these wipes gently and effectively remove smudges and dirt leaving optical surfaces free of scratches streaks or residue. ZEISS lens cleaning wipes are individually wrapped allowing them to be conveniently stored in your purse backpack desk or car. The date printed on the package is the Production Date. The product is good for at least 3 years from the production date.