Back Support Cushions (Deluxe). There is more stress placed on the lower back than on any other part of the body. Provides support for the lower back to relieve and prevent back pain and fatigue. The S-shaped frame comfortably conforms to the natural S-curve of the spine to guide the back into correct alignment and promote proper sitting posture. Lightweight and portable. Designed for use in any seat; in the office, vehicle, fork truck, or at home. Attaches with hook and loop type fasteners. All Back Support Cushions are black in color. Specs: overall size 19" x 8" x 22".