Microfiber towels are made using nylon and polyester fibers, where each fiber is even smaller than a human hair. These small fibers can get inside cracks and crevasses that other materials simply cannot reach and capture the dust and dirt particles within. This quality makes microfiber towels the best material to clean car exteriors. Not only that, but if you have ever held a microfiber cloth, you would know how soft they are. As a result of this soft and smooth nature, these clothes can glide across the paint without causing any abrasions. You can find microfiber cloths with different thread counts out on the market. Thread count refers to the number of threads contained within an inch of woven fabric, and we recommend using a microfiber cloth with a thread count of over 300 for cleaning the exterior of your car.