The idea of the mattress: a device that inflates the mattress at the beginning, and then the device constantly inserts and takes out air from the mattress
Used for bed-ridden to prevent bedsores.
You move air beneath the patient so that it does the same thing as turning the person over.
The bottom of the mattress should be another foam mattress.
It is preferable to place a cotton sheet over the air mattress to prevent scalding