Transforms your unused racquetball court into a volleyball arena for 2 teams of up to 4 players each. Wallyball employs many traditional volleyball rules, but adds some unique Wallyball rules too. The most notable difference is the use of the walls. Special hardware allows you to easily mount or dismount the net, without danger or obstruction to racquetball players using the court at a later time. Complete set includes: Ball, net, net tightener, storage bag, rule book, hardware, and instructions.