Unique design helps stimulate blood circulation and invigorate back muscles. Hugs your lower back to help improve your posture and reduce stress to the back, low back pain. Perfect for improving the ergonomic comfort of your office chair or favorite chair at home. Back Cushion offers super comfort and lumbar support for your car or office chair. Our Back Cushion provides comfort and pain relief whether you are at home, at the office or on the road. Universal design, suitable to almost all 12V cars.