Opper Fiber® Microfiber Cleaning Cloths are made of thick, heavy microfiber material. They’re specifically designed for eyeglasses, sunglasses and electronic devices. They’re capable of effortlessly removing smudges and fingerprints from screens without causing any damage. Customize it with your client’s logo, message, and a QR code. When your client’s distribute these at a tradeshow or seminar, they can ensure that their brand remains at the forefront of recipients' minds. A great item!