Balance pads can be square, rectangle, or oval and are designed to exercise and rehabilitate the lower extremity and core musculature to improve functioning of the somatosensory system for improved balance, posture, core stability, and athletic performance. They are also used for rehabilitation purposes associated with injuries to lower extremities as well as low back strain.
By throwing the body out of center of gravity homeostasis, balance boards cause movements that rapidly stretch muscles activating their muscle spindles responsible to contraction of those same muscles to restore joint position and body upright position.
Regardless of your purpose for balance training, ProHealthcareProducts.com has balance pads to facilitate your efforts.