The Snow Pac is molded around the patient, a suction line is then attached to the special valve. As a vacuum is created, the atmospheric pressure forces the beads together in the exact molded shape. When the suction line is disconnected, the Snow Pac retains this molded shape. After surgery, the valve is opened and the Snow Pac becomes soft and the patient can then be moved.
- Type U cutout 90(L) X 118(W) cm