The Replacement Head Rest Pillows are designed to fit Artesian Island Spas, hot tubs, and Tidal massage seats. Made of foam and fabric in a dark grey color, these pillows provide comfort and support for your head and neck while relaxing in your spa or hot tub. With care instructions of hand wash only, these pillows are easy to maintain and keep clean for long-lasting use. The package dimensions of 12.91x10.43x3.39 inches and weight of 1.44 pounds make them convenient to transport and store.