Rainwipes Microfiber Towels are designed for use on plastic panels. One strand of the Rainwipes Microfiber Towel is several hundred times smaller than a fine strand of cotton fiber. The hypo-allergenic, non-abrasive wedge shaped microfiber scoops lift and trap dirt, dust, grime and moisture without scratching. The fibers are lint free and non-abrasive. Microfiber towels can be used wet or dry, are extremely durable, and can be washed up to 500 times.