As a company of athletes we can safely say that these balls are a critical part of any footwork and agility training toolkit. They help athletes of all ages and skill levels improve reflexes, hand-eye coordinationand and quckness. Since the ball has six rubber sides it's high-bounce multi-vector reaction is compleltely randomised, putting everyone at an equal advange. These reaction balls can be used on any hard surface or wall and with one athlete or an entire team. Dare to be great!