The “Alianna“ Air cushion is a dynamic type of cushion with a system that can be manually operated allowing application of minimal pressure at the bony area of the posterior. Overall pressure relief can be achieved as well as an extremely low interface pressure in areas most prone to pressure sores, the cheekbones and tail bone (sacral) areas of the posterior in particular. It is important to know that to avoid pressure sores, blood circulation in the tissue should be maintained. Medical studies show that the pressure of 32 mmHg or less allows blood to circulate into compressed tissues of the body. It has already been proven through pressure mapping that the interface pressure achieved with the “Alianna “ air cushion is much better than 32 mmHg.