Gel Wheelchair Cushion 20 x 18 x 2 Inversion Tables Accessories Premium transfer board with tapered 8 and dispenses one Premium transfer board with tapered ends * 7 ply birch wood base with 3 additional plies form laminated on top * Walnut stained clear sealed * 1 2 thick in the center 1 4 thick at either end * Smooth uninterrupted surface from end to end * Stress tested to hold up to 450 pounds * Board weight: 2 5Hz 50Hz 100Hz 200Hz * Six treatment times: 5 10 15 20 25 or 30 minutes * Tactile buttons for enhanced control * Convenient 9 volt battery * Easy to operate * Economical and dual purpose Perry PathwayTM vaginal and rectal EMG stimulation sensors Includes stimulator and 1ea 9V battery * Must order Vaginal (PG6330) or Rectal (PG6340) Sensor separately * * The cover is fluid resistant low shear nylon 20 (W) X 18 (D) X 2 (H) Gel U Seat Lite General Use 2 Gel Foam Wheelchair Cushion