Abstract: An orthotic device includes a rigid support member and a removable inner liner having a contact surface adjacent the support member formed of a non-skid or non-slip material. The liner may include a flap or pocket for receiving at least a portion of the support member, at least at first strap having a first end attached to a first region of the liner and a second end fastenable to a second region of the liner for securing the orthotic device to the wearer, and a patient interface surface.

Abstract: A cushion adapted to reduce heat and moisture from a wheelchair user's body, including a cushion member having a compressible material that permits air and moisture to flow through the cushion member. The cushion also includes an air and water permeable cover adapted to receive the cushion member. The cover includes an interface member having an outer layer formed of a hydrophobic material, an inner layer formed of a hydrophilic material, and a spacer layer having fibers positioned between, and generally perpendicular to, the outer and inner layers.