Zwipes microfiber cloths have been an industry-leading microfiber tools brand since 1996. The team at Zwipes firmly believes in the cleaning power of microfiber. With hundreds of thousands of cleaning fibers (vs. traditional cotton rags), the wipe power efficacy is magnified by 100x+. Microfiber does not require hazardous chemicals to sanitize cleaning areas due to the fine fibers ability to penetrate and kill germ molecules. Not only can you get a waterless shine, but it's easy to throw these wash cloths in the washing machine for use time and again. In addition to using these cleaning cloths at home, at work and restaurants, these cloths are perfect for car body shops, wash cloth, and part of your car cleaning kit. If you have any issues or questions, the U.S. based company and the team at Zwipes are here to help you get the most use and enjoyment out of your investment. We look forward to hearing about how much Zwipes has improved your cleaning experience. TIPS. please do not use fabric softener. Extreme high heat is not recommended to ensure optimal life of these cleaning rags. Please pre-wash the RED color in isolation as the rich inky die can bleed before first wash. Color: Yellow. Material: Polyester.