Cervical Pillow Convoluted Bedboards Designed for long term users 7344301 Designed for long term users of wheelchairs * Provides comfort for an entire seat or chair with soft comfortable covoluted foam and ties to secure it * Seat size is 18 W x 16 D X 4 H Back Size is 18 16 x 3 * Helps promote good posture while cushioning the body preventing sores and offering a slip free seat Includes: unit nebulizer kit mouthpiece air tube ac adapter 4 air filters storage bag instruction manual * HCPCS Code E0570* Virtual Valve Technology * Compact and convenient Specially designed sleeping pillow uses convoluted foam shaped to support the neck and promote airflow * Special wedges inserted into each edge to provide cervical support regardless of which side you use * 22 x 19 * Poly cotton white blend cover included * This pillow does NOT compare to the Wal Pil O * The Wal Pil O is a 4 in 1 pillow that has been clinically proven to help reduce pain *