Work out knots and tension with this Yoga Massage Ball  Choose from a pack of 1, 3 and 6  Relieve sore and tight muscles with ease  Simply lean on the massage ball and use your  body weight to work it around beneath you  Diameter: 63mm - 65mm Perfect for use while sitting on any chair, laying in bed, on the floor and more Small, portable and easy to bring along on any trip Buying Options:  5.99 pounds instead of 19.99 pounds for 1 ball - save 70%  11.99 pounds instead of 59.99 pounds for 3 balls - save 80%  22.99 pounds instead of 119.99 pounds for 6 balls - save 81%