Knobby Footballs - Party Knobby Bounce Balls- 5 Pack 11" - Play Kreative TM These knobby footballs are distinguished by a series of short spikes on the exterior, making for a unique texture and feel. Great for small to Big Kids. Each ball is 11" in diameter These are lightweight & have a cool, bumpy texture Perfectly safe for kids, made entirely of soft rubbery material Note: balls shipped uninflated and colors may vary