3-in-1 Alternating Pressure System combines True Low Air Loss and advanced clinical features, creating the Ultimate Solution for Patient Comfort and Pressure Relief. Advanced 3-in-1 alternating function inflates and deflates cells in a 3:1 cycle, providing active pressure relief by supporting 2/3 of the body at any given time. True Low Air Loss Therapy provides extra comfort for moisture and temperature control. Highly vapor permeable and oversized pliable quilted nylon top cover provides low shear, friction and moisture protection. Added convenience of Integrated side bolsters that can be inflated and deflated on-demand. Nylon non-slip base cover helps reduce shear and friction during bed articulation.