Roho Hi Profile Cushion 20 x 16 x 4.25 Single Valve Nerve Sensory Evaluator Access from 20 wheelchair height to The wetness indicator turns from 20 wheelchair height to 30 high * Hands Free foot control operation * 2 High Density urethane foam vinyl top * Steel frame and 4 corner legs have durable black powder coat finish * Legs have levelers for uneven floors * 4 Leg Error in Weak Filling Condition: 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