Beck's Classic Underpad, 18 x 24 Inch, 1 Each Underpads Reusable Digital Moist Heating Pads * Parts are DEHP and Digital Moist Heating Pads * Shoulder Neck 23 x 20 * Digital hand control allows operator to program and monitor temperature treatment time * Lockout mode protects against inconsistent changing of the control settings throughout treatment * Allows patient to relax and enjoy therapy without the hassle of maintaining contact with a hand held switch * Moist heat therapy temperatures range from 113¯ to 167¯F * Treatment time between 1 and 30 minutes * Specially designed flannel cover for efficient moisture retention * UL and cUL classified * 1 Year Warranty on heating pads only * 75 (when sizing measure around the middle of the waist) * Provides pain relief and compression for muscle injuries and general lower back dysfunctions 80% cotton 20% polyester Each pad has three layers