ZWJ1048 Features: * Moist heat pack * Convenient size for to provide moist heat therapy to relieve the pain and muscle spasms of arthritis, sprains or strains, fibromyalgia * Responds well to heat therapy * Produces the maximum level of intense moist heat therapy available * User controlled with our dependable hand-held switch * Automatically produces moisture from the atmosphere * Lets you safely add more moisture when needed * Made in the USA