Made of solid, high density, and natural rubber. Each wrist Rebound Ball measures diameter 2.4 inches bigger than 1.85-inch weight 0.2 lb (90G).
Each Rebound Ball is attached to an adjustable Velcro wrist bracelet, together with a 35-inch stretchable cord attached!
Small handy size - 2.4" wide, suitable equally for children and adults, it is a wonderful Gift for autistic children. Meanwhile, it can be used as birthday goodie bag stuffers, leisure sports, and birthday party games, so it is a great party favor and for Sports theme parties.
Use for hand finger stiffness relief and wrist exercise. Dangle from a stretchable string attached to a wristband, NEVER lost the ball again.