The original rolling squeegee! The Rol-Dri removes standing water from your tennis courts after rain or washing, allowing them to dry as fast as possible. The "Blue Master" model features a dense polyvinyl alcohol (PVA) roller that creates an excellent "rolling seal" with the court surface. The "Seamless" model is equipped with a spongier roller which works best on slightly uneven courts with "bird bath" depressions. Both models feature Rol-Dri's lightweight aluminum handle. A complete selection of replacement parts is available.