White microfiber provides the highest efficiency in extracting soil and is blended into our color coded yarn to provide the best mop in the industry. Designed to extract and hold the highest amount of soil within the large loop structures. It offers high performance cleaning on all surfaces wet or damp. It is also the ideal mop for the pre-treat system. True polyester/polyamide microfiber blend cleans better than competitor's "100% polyester" products. The Microfiber Pocket Mop covers more square footage than short pile threads.