ProBasics K3 Lightweight Wheelchair 16 x 16 ELR Defibrillation 20 x 16 * Single 416700 20 x 16 * Single compartment cushion * 4 air cells provide prevention and healing relief from ischemic ulcers (pressure sores) * Maximizes pressure distribution blood flow and nutrient exchange as well as shock and impact * Conforms to the body s shape and adjusts to body changes over time * Includes cover * 2 year warranty Cushion includes cover pump repair kit and operating instructions * Cushion is 8 cells wide x 10 cells deep * 3 year limited warranty ProBasics K3 Lightweight Wheelchair with 16 x 16 Seat Flip Up Height Adj Desk Arms Elevating Legrests 300 lb weight capacity