The Pure2Improve Reaction Trainer is used to improve hand/eye coordination, speed, agility and reaction in professional sports and rehabilitation exercises. 

 Reaction Trainer. Red. Reaction trainers are designed to bounce in an erratic and unpredictable fashion. Used to help improve agility, hand-eye coordination and reaction time. A great training tool for all ball sports - use against a wall or with a partner. Material: 70% natural rubber, 30% additive. Packed in blister.