McKesson ECG Recording Paper, 1 Case of 2000 CPR Boards Retail boxed * Memory Foam 48750 Retail boxed * Memory Foam * Blue cover * Ergonomically designed to provide ideal spinal alignment and a therapeutic sleep posture to reduce head neck shoulder and back discomfort * Can also be used under the back knees or ankles * The high quality memory foam reacts fast to provide instant relief and comfort and provides slow memory foam recovery for longer support * The removable soft polyester and rayon cover zips off easily for machine washing * Hypo allergenic * Data Hold function Compatible with Quinton 8 1 2 inches x 183 feet (21