A pressure-relieving mattress is the best type of mattress to help prevent bed sores, also known as pressure ulcers. These types of mattresses are designed to redistribute a person's weight and alleviate pressure on areas of the body that are most at risk for developing bed sores, such as the heels, hips, and shoulders. (Great answer)
Some examples of pressure-relieving mattresses include air-fluidized beds, alternating pressure mattresses, and low air loss mattresses. It's important to note that using a pressure-relieving mattress alone is not a guarantee to prevent bed sores, it's important to combine it with regular repositioning and turning of the patient. (Great answer. We have a lateral rotation mattress that will turn the end user automatically for the best possible care)
It's best to consult with a healthcare professional before selecting a mattress. (Always)