silicone; Bounce ball--unique six-sided design, will bounce in random directions so that your agility and reaction can be trained, agility ball; Reaction ball--, durable to use for long time, agility ball; Balls--it's a your reflexes and agility, reaction speed, hand-eye coordination, and can be used as a rehabilitation excercising tool, agility ball; Reflex ball-- training tool for professional athletes or players, agility ball; Workout ball--easy to use, simply bounce the reaction ball on any hard wall, floor or surface, agility ball
What's in the box
1 x Other Strength Training Equipment
