The SN-50, Stuff-It™ from Carson Optical is a patent pending lens cleaning system that features a super-soft microfiber lens cloth housed inside a protective pouch. Simply pull the lens cloth out of the pouch to use. When not in use, pull the drawstring to retract the lens cloth back into the pouch and stuff the remaining cloth in with one finger. The protective pouch will keep the cloth clean and dry so it will always be ready for use. The Stuff-It™ is compact and extremely portable. The Stuff-It™ fits easily in your pocket, Camera bag, Binocular case or use the attached hook to clip it to your jacket. The Stuff-It™ is ideal for cleaning Binocular Lenses, Spotting Scope Lenses, Telescope Lenses, Camera Lenses, GPS devices, Eyeglasses and more. The microfiber lens cloth is safe to use on all Lenses. Will not scratch or damage Lenses in any way.