Some general guidelines. Now, these sometimes work against one another, and one needs to choose the characteristics that are most important for one's particular condition. However, this cushion is short on stability. The Jay cushion also provides good pressure distribution and a little more stability. If you have sensation, a moderately dense foam cushion is probably going to provide the best comfort and portability for you and is much more economically priced.
Cushions are expensive, and mostly covered under medical insurance.
Cushion covers can sometimes be problematic. Sheepskin is sometimes a real culprit. With these, one should use only the covers that come with the cushions. Mattresses are also an area where a great deal of confusion exists. In general, comfort and support are of great importance.