Holds up to 7 times in weight in liquid, dirt or grime - Microfiber has a capillary effect between the fibers creating suction, enabling it to clean and polish at the same time. 80% polyester/20% polyester microfiber. Microfiber is a lint-free, non-abrasive, and hypoallergenic product that allows you to clean without the use of harsh chemicals. Recommend machine washing before use.