Apparatus, systems, and methods to support a patient or other person includea first material that is substantially air impermeable welded to a second materialthat is substantially air permeable and liquid impermeable. The first materialmay also be liquid and vapor impermeable and the second material may be vapor permeable.Exemplary embodiments may include an inflatable enclosure formed from a sheetof the first material with an aperture, and the second material may cover a portionof the aperture.