Features: 

1.A simple massage tool which can help relieve muscular tension, promote blood circulation. 

2. Great for massaging your palms, feet, ankle, shank, arms, neck and back, etc. 

3. With a diameter of 7cm, 9cm, it can be put in the pocket when not used. 

Specifications: 

Diameter: 7cm, 9cm 

Color:  Blue/Yellow/ Red/ Green/ Light Green