Six-sided design for moderate erratic bounce Improves footwork and dexterity Uses bright color to improve visual recognition Made from 100% silicone Highly compact and travel-friendly for training on-the-go The PTP Reaction Ball is the perfect tool to take your sports performance to the next level by improving your reflexes, speed, agility and hand-eye coordination. When the ball hits a surface, the multiple protrusions create erratic bounces. This will force you to quickly shift direction to retrieve it. It is perfect to build muscles and burn fat.