Introduce your kids to basketball at a young age with the Spalding Youth portable basketball system, which features an easily adjustable telescoping backboard that can be set 4.5 to 6 feet in height. It's a great choice for use with a size 3 junior basketball, and it can be used both indoors and outdoors. The three-piece, 2-inch diameter pole system assembles and breaks down quickly, and the base is stabilized with either sand or water (and includes a built-in holder for the ball). It's matched with a 32-inch fan-shaped Eco-Composite backboard (made from recycled materials) and 14-inch solid steel rim.