Always have a lens cloth handy. The Costa Del Mar Hermit Lens Cleaning Cloth perfect to keep in your car, boat, RV, backpack or purse. Handy micro-fiber eyeglass cleaning cloth tucks in to stay clean, pulls out for cleaning lenses. Clip attaches almost anywhere. So don't be caught with a dirty lens. Perfect for hunting optics, sunglasses, Rx glasses or any smudged surface.