A low-rise visco-elastic foam cushion that provides pressure relief and redistribution while aiding in posture control. Visco-elastic foam molds to users anatomy. Includes rear cut out for treatment of coccyx skin breakdown. Maximizes pressure relief. Leg troughs promote thigh alignment and postural symmetry. Raised front controls sliding. Safety strap keeps cushion in place. Low-Shear II wipe-clean outer cover reduces skin damaging friction.