The Selectis Serenity is a pressure relief mattress intended to reduce the incidence of pressure ulcers and provide treatment through every stage. The cell on cell design prevents patients from "bottoming out" while ensuring the mattress remains inflated in case of power failure. Through alternating pressure, the mattress can dynamically change to accommodate the patients preferred pressure points and improve circulation. This mattress system features 8" deep air bladders with a 5" upper alternating layer and 3" lower static layer.