Large size measures 16" x 16". Washable and reusable up to 500 times. Streak-free performance. Use wet or dry. Works electrostatically. Useful for cleaning windows, mirrors and optics. Removes dust from computers, video/stereo equipment, CD's/DVD's, cameras, guns, silver, crystal and much more. Polishes and buffs off wax easier and faster than cloth. Removes fingerprints and oils in one wipe. May be used on any surface: glass, plastic, auto paint, fiberglass, vinyl, leather, stainless steel, all metals, tile, ceramic, marble, granite and linoleum. Hang packaged.