Apparatus and methods for adjusting a support to a body are described in which a portable support assembly may be worn or used by a bed-stricken or wheel-chair restricted individual around particular regions of the body where pressure ulcers tend to form. The portable support assembly may generally include adjustable supports which conform the assembly to the patient's body and which also help to distribute one or more fluid pad assemblies relative to the body. The support assembly may be incorporated into a design for a wheelchair or a bed.