3 different stress balls in one package. Stress balls can be used to develop compressive strength and activate circulation in the wrist and forearm. An excellent tool for reducing tension in the shoulder and neck muscles. Balls can also be used to train finger motor skills.
Balls have 3 strengths: green – light / purple – medium / red – heavy.
DIAMETER: 6.3 cm
WEIGHT: 100 gr MATERIAL: neoprene
Brand name: Gymstick