Back Pain Relief While You Sit. The IMAK Back Support offers the latest in seating comfort and orthopedic lumbar support. Its ergonomic shape hugs your back improving posture and reducing stress on the lower back. Large and small vacuum-formed air pockets provide a 'pressure point massage' to your back. This stimulates blood circulation, invigorating back muscles to help ensure a healthy back. Another important benefit of the unique air pocket design is that it allows air to circulate preventing your back from getting hot and sweaty. The IMAK Back Support is perfect for improving the ergonomic comfort of your office chair or your favorite chair at home. It fits nearly every car seat. Sculpted, high-grade foam is covered with durable poly material - pending on info on materials from supplier. A single elastic strap secures the back support to any chair. To clean, remove the cover, hand wash in cold water, air dry - waiting for info from supplier. Machine washable zipper cover. Ideal for Office, Home, Car, Airplane.