Catchball Goalie Reaction Performance TrainerThe Catchball is a very simple yet effective all around training tool for every goaltender to improve reaction time among other benefits. It's a performance reaction training tool that can be used by goalies of all ages from minor hockey to professional levels. The Catchball was invented in 1995 by world a renowned goalie coach when he was looking for a tool to quickly and efficiently improve the reaction and hand eye coordination of his goaltenders.