• Spiked Fitness Ball, Yoga, Exercise & Gym Ball Red/Yellow/Blue/Green/Clear 

1. You Have To Inflate Ball With Air Pin That's Included (optional) -AND/OR with a Basketball / Football Pin-
2. This Unique Body Exercise Ball is designed to massage and improve circulation in the body – particularly for the arms, legs, back, hands and feet.
3. It is made from a specially produced rubber material that is both flexible and durable for long term use.
4. The Body Massage Ball with spikes surface is an excellent means of reducing tension, relieving aching muscles and improving circulation.
5. This Fitness Exercise Ball offers a simple and pleasant method that self massage can be done anytime and anywhere, even at the work place.
6. Length (Deflated): 11 1/2"
7. Diameter (Inflation): approximately 8 1/2"
8. Weight: 102g