Foot Warmers provide soothing warmth and pain relief to tired, aching feet. The cozy fleece material is filled with premium natural grains that conform to the shape of the foot. When heated the grains slowly and evenly release therapeutic warmth. Ideal for arthritis, tendonitis, stiffness, chronic cold feet, and sore or aching feet. Heat quickly in the microwave. Reusable. One pair - fits men or women. Color: Black. Measure according to US shoe size.