16W X 18D * This new low profile seat has the same features as the standard seat at a reduced height * Provides a platform to prevent knee flexion contractures * Help to reduce stump swelling and dependent edema * Fully retractable extensions * All sizes are bilateral * Extension cushions have removable * washable covers * Easily removed from the chair * The seat adds only 1/4 - 1/2 in height dependent on the upholstery * The main seating area is recessed so that the narrow edges sit firmly on the chair rails and the centre on the upholstery *