McCarty s Sacro Ease Keri Lumbar Cushion provides first rate back support for anyone needing relief. With a steel frame and rubber to keep the memory foam material more stable, this is a much more durable and reliable backrest than the average foam model. The Keri Cushion can reduce muscle tension and stress caused by sitting in unsupportive chairs and seats. With a strapping system to keep the cushion stable and an ergonomic shape to keep your back naturally aligned and supported, the McCarty s