Abstract: Air mattress systems and assemblies allowing adjustment between different portions to achieve a generally level sleeping surface. An air mattress may have a base chamber that, when inflated, has generally planar upper and lower boundaries. A lower angled chamber disposed above the base chamber may be formed as a generally elongated wedge extending the length of the mattress and has an angled upper boundary. An upper angled chamber may be disposed above the lower angled chamber and formed as a generally elongated wedge extending the length of the mattress and having a lower boundary defined by the upper boundary of the lower angled chamber and a generally planar upper boundary. The upper and lower angled chambers may be variably inflated to result in a generally level planar upper surface, where the base chamber is in contact with a sloped surface.