Compression Box Pump W Hose for Thermo Active Supports Jobst Relief 20 30 Thigh Hi For home or office use 4012SC For home or office use * 4 powerful massage motors provide soothing relief to neck shoulders and back * Heat option provides comforting relief for back muscles * Cushioned lumbar for added support * Easy to use remoted hand control includes 3 power levels for massage * Strapping system fastens to most chairs * Home adapters included * UL listed (transformer only) * Limited one year warranty * X Large * Color: beige * Ideal for arthritis * This knee support is designed with an adjustable Velcro closure to allow arthritis sufferers ease of use and variable compression Replacement pump to be used with our #5592 series of supports