Deep-kneading massage to relax and soothe feet. Feature 4 innovative rotating massage heads. The heads are designed to be counter rotational moving in opposite directions of each other. Able to use with or without heat. Controllable with easy toe-touch controls. Ergonomic design with sides that are slightly angled. Allows feet and ankles to be in a comfortable resting position. Dimensions: 13.6" x 3.6" x 9.1".