The Contour Select Cushion provides the skin protection, with the positioning and stability needed for increased function. The contoured design combined with the simple operation 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 user 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.