Mattress recommended for the prevention and treatment of pressure sore stage I and II in long-term and domiciliary therapies. The 24 7.5 cm-high Nylon+PVC cells provide superior comfort. They can easily be replaced in case of breakage. Special silent pump for an excellent pressure regulation by a knob on the device front panel. The pump can be hung to any kind of hospital bed frame by means of two adjustable hooks. For use with bubble or alternating cell mattresses.