Wheelchair Tray Half Lap Wood Flip Away for Desk Arm Mouthpieces 18 X 16 * The Underpads 18 X 16 * 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 All Glytactin Complete medical food formulas contain Glytactin For Desk Arm * This unique design provides arm support and a work surface when required * It attaches to the chair with a metal bracket under the arm padding * The tray flips over the arm and lies flush leaving the wheel free for pushing * Doesn t increase the overall width of the chair * The wood tray can be used either right or left side *