Produces a clean 36" wide sweep that squeezes water ahead of the roller. Rolling seal action doesn't skip depressions. Works on any hard-surface court with no scraping or damage to court. Prepares court so you can play within minutes after rain stops. The roller is made from tough, durable polyvinyl alcohol. The non-deteriorating foam is molded directly onto the roller core for a seamless fit to ensure rapid streakless drying.