Thermophore MaxHeat Medium Joint Size (14 x14 ) Body Positioners lluvia™ is IP68 Waterproof Certified❗What Medium The NasalFit Deluxe lluvia™ is IP68 Waterproof Certified❗What does this mean Backrest Seat & Legrest * Protects against skin tears and relieves pressure * Ample foam padding makes geri chairs more comfortable * Fluid proof low shear civer reduces skin damaging friction * Covers metal chair components to reduce cuts and bruises * Fits all styles of geri chairs * Designed not to slip or bunch up * 2 models: 1 with and 1 without leg rest protection * Completely launderable * Size 74 L x 20 W Medium Joint Size 14 x 14 * Designed for Arthritis sufferers * New Four Stage Therapy Switch provides optimum 20 minute treatments * Simple one touch control features auto shut off timer * Produces intense moist heat without adding water * Fast acting therapy relieves pain and stiffness for hours * Shipping Carton Size: 16 L x 12 W x 4 H