A powerful anti-fog that works for hours on all kinds of eyewear, including: sports goggles, dive masks, eyeglasses, sunglasses, faceshields, shooting glasses and more A proven formula used by military worldwide The dry cloth is infused with anti-fog that goes on invisible, with no greasy smearing Comes with 3 reusable anti-fog cloths, each good for up to 8 applications. The handy flip-top storage case goes with you anywhere Can be used for skiing, hunting, scuba, paintball, military, safety, and more!