Portable and easy to move, the Spalding polycarbonate basketball hoop system includes a 111cm (44”) shatter-proof polycarbonate backboard, a board pad and a steel Slam Jam breakaway rim. The base has two wheels, making it easy to roll down the driveway, even when the 117L (31 gal.) base is filled with water or sand. Rim height is easily adjustable with the Pro Glide lift system in the steel pole. | Spalding 44" Polycarbonate Basketball System