What is a KNOCKERBALL?
A protective single chamber ball filled with air with handles inside and shoulder straps to enable you to safely have fun, slam, roll, bounce or crash another Knockerball opponent without getting hurt.  OK, there is some pain involved; the pain in your sides from so much laughter. Don't forget to practice some rolling and flipping.  You can play knockerball soccer, relay races, musical chairs, king of the ring, sharks and minnows, protect the king, battle ball, and more.