3M 9021 Lens Cleaning Cloth
Removes Fingerprints & Smudges Without Scratching!Lint Free!  Scratch-Free1 Cleaning Cloth ~ 7 in x 6 in (18 cm x 16 cm) Unique 3M microfibers lift dust and oils from delicate lenses without the use of chemicals. Ideal for eyeglass lenses, camera lenses, binoculars, microscopes and other delicate surfaces. Saves money.  The cloth is reusable and machine washable hundreds of times.  Non-scratching, non-linting. *Caution: Cloth itself does not scratch surfaces, but can pick up particles that do scratch.  Serged edge may scratch delicate surfaces with direct pressure.  80% Polyester, 20% Nylon. The nubby micro-texture surface is a trademark of 3M.