The bullet shape offers more useable surface for foot and ankle support. Made of semi-flexible 1/4" high-density, moistureproof white polyethylene. The mover is radio translucent so that it does not need to be removed during X-ray examination. The 9"W x 5"H head/neck pillow attaches with hook & loop straps and can be moved up and down with the position of the patient. The pillow can be removed to use slots to secure a neck immobilization device (not included). Caregivers appreciate enlarged hand holes which accommodate up to six people. Slots can be used to hang the board on the wall.