The Tennie Two-Step is a very effective cleaner that removes court material out of even deep treaded shoes. Simply place your feet in the Tennie Two-Step and shift you weight back and forth. The shifting action forces jets of water through the small holes in the rubber treads, flushing embedded court material from your tennis shoes! The Tennie Two-Step is constructed of durable UV resistant polyethylene and will provide years of dependable use. Replacement rubber pads are available.