Roho Contour Select Cushion 20 W x 18 D Dynamometers Accessories Model:BP826 Color:Yellow Model:BP826 25 W x 10 D Adjustable Seat Height: 17 23 Color: Gray Weight Capacity: 450 lb Carton Dimensions: 29 s shape and weight * Cushion is adjustable to changes in individual 20 X 18 * The contoured design combined with the simple operation of the ISOFLO© Memory Control unit offers provides a new level of postural control and stability that has never been achieved in an air cushion * The contoured design positions the pelvis back in the wheelchair and centers the individual comfortably in the middle of cushion * The ISOFLO Memory Control unit locks air into each of the four compartments providing stability by minimizing side to side and front to back motion * Adjustable to individual