Abstract: A portable mat capable of blocking air convection and temperature radiation is disclosed. The portable mat is an inflatable mat, and includes a first outer covering layer and a second outer covering layer that are connected by a plurality of connecting members each in the form of a thin and light ring. Side pieces of the connecting members each have different widths according to high and low positions. A plurality of blocking layers of a blocking unit is fitted on the connecting members. The block layers have openings with different widths. The openings of the blocking layers are different in size corresponding to the different widths of the connecting member, so that the blocking layers are positioned at different heights to form a plurality of spaced space inside the mate, thereby blocking air convection and reducing temperature radiation.

Abstract: A pressure reduction mattress construction for a liquid or gel bed having a flexible basin forming a cavity with inclines head and foot for surrounding and supporting a liquid or gel filled flotation bladder that is anchored to the head of the basin. The inclines made of a soft yielding material allow the head or foot of the bed to be easily raised as the liquid or gel moves toward the center of the bed. The head incline also serves to provide a soft yielding surface to support a patient after liquid or gel has naturally moved to the sacral area. The entire structure is then covered with a flexible and yielding hospital fabric cover, giving the bed the appearance of a conventional hospital mattress. An optional heater pad may be used with a fiber filled sacral/pelvic bladder placed over the heater pad.