SPDK1001 Features: * Back Pain Relief System * Provides a firm structure for safe, gradual conditioning of the spine * Relief from both upper and lower back pain as well as tight neck and shoulder muscles * The base unit is made from a clear ABS plastic * Gel Pack provides a deeper stretch through the use of heat or cold * Gel Pack filled with distilled water * Gel Pack comes in a 100pct cotton washable cloth cover with Velcro closure for easy positioning Includes: * Set includes: Base Unit, Gel Pack and Instructional DVD * Instructional DVD includes step-by-step set up directions as well as several suggested SpineDok exercises Dimensions: * Overall dimensions: 5.5" H x 26.19" W x 8.5" D Warranty: * 5 year Limited Warranty