Aloha polyester balls have a name! ZERO – and that stands for the strength of the ball: ZERO HOOK! Whether you are a beginner looking for your first ball or an experienced bowler looking for an excellent spare ball, Aloha Zero Polyester Balls will improve your game. The durable and long-lasting polyester shell produces little friction and in combination with our pancake core, it is even easier to hit the spares even on difficult patterns.