Arkwright Edgeless Microfiber 12-Piece Cleaning Cloths are designed with smart-edge laser-cut edges and is made from 80% polyester and 20% polyamide. This innovative spliced yarn creates miniature gripping "hooks" built into its yarn construction with a positive electrical charge that attracts dust and dirt, which carries a negative charge. Microfiber attracts and traps dirt like a magnet! The laser-cut edgeless construction has a zig-zag border and no sew edges for streak-free cleaning. Our 16"x16" microfiber cloth one of the thickest microfiber cloths we have. It has a soft, plush touch, and is lint-free for spotless cleaning. This is a perfect cloth for detailing classic cars or fine machinery. Packs of 12 towels are available in five colors options. Microfiber Cloths are machine-washable and can be laundered up to 500 times. To protect the cleaning power of microfiber, wash in cool or warm water and hang dry or dry on a cool setting. Avoid bleach and fabric softeners.