Sitting comfortably and safely is vital and the Standard Sero Pressure Cushion helps to relieve pressure on areas that are particularly painful. Its egg-box style foam construction features pockets that allow air to circulate to eliminate numbness and increase heat dispersal. Durable and comfortable, it's suitable for use in a chair or wheelchair and is very useful when you're at the office or travelling. Indication of pressure ulcer risk is not a prescriptive evaluation.