Enjoy Extraordinary Relief. Reusable and nontoxic. Healing power of hot & cold therapy. Confirms to your body. Freeze or microwave. Latex, lead and BPA free. 7.5 in x 4.5 in. Walgreens pharmacist recommended*. Doctor designed TheraPearl Technology combines the healing power of hot and cold therapy into one convenient pack. Enjoy extraordinary relief from your everyday aches and pains, and feel the optimal therapeutic benefit as o.