Specification:

Made from pvc material,

                     Weight: 4lbs;

                     11cm diameter;

Features:

  Iron sand or yellow sand inside to increase weight;

              Soft and easy to clean surface, feel comfortable;

              Different colors available, and logos can be printed;

              Usual weight: 1, 2, 3, 4, 6, 8lbs etc.

              Used to strengthen and tone muscles and bones of the hips, back, legs, arms and shoulders.