This item is a black, neoprene rubber, inflatable wheelchair cushion. The size is 18"W x 20"L x 4" H. The Quadtro Select is a four-compartment cushion, adjusted through a single valve The revolutionary ISOFLO Memory Control offers shape fitting capabilities while the user is seated The ISOFLO Memory Control regulates airflow between the four quadrants Deformation of the soft tissue is minimized through the proven skin care characteristics of DRY FLOATATION technology that facilitates blood flow throughout the contact area The low dexterity ISOFLO Memory Control offers the client the power to set the cushion up for use in different functional activities without changing the volume of air in the cushion Multiple air cells allow air circulation to reach the surface of the skin and provide a cooling environment Includes Quadro Select Cushion, two-way stretch cover, hand inflation pump, repair kit, and operations manual.