massage ball series (GBM series)

Features: 
1) Material: PVC
2) Weight: 30g - 1,450g
3) Size: 8cm - 75cm
4) Color: red, yellow, blue, white, black
5) Used to strengthen and tone muscles and bones of the hips, back, legs,
  hands, arms, and shoulders
6) Helps develop overall body muscle, balance and coordination
7) A great exercise alternative for any age and fitness level
8) Can massage the head