About this projectHIGH QUALITYThese reflective balls are made of durable high-density rubber and consist of a six-hemisphere design that creates a dynamic and optimal bounce and carrom. It is suitable for all hard surfaces.Improve ReflexesIt helps to build reaction speed, motor sensory skills and peripheral vision tracking ability. Improve your coordination and reflexes. Can also be used as a rehabilitation and exercise tool.Instant FeedbackReaction balls are designed to bounce randomly, better analyze your player"s contact with the ball when you receive instant feedback about their reaction time, so you can enhance your hand-eye coordination and improve reaction time.Multi-purposeExcellent training tool for all sports: baseball, football, soccer, tennis, kickboxing and basketball training.Training AnywhereNo matter where you are, you can exercise your agility and speed. Only 2.75" or 7cm in diameter.