Ergonomic Lumbar Support: Design to support your spine nature curve and promote a healthy posture which can relief Lower, upper and Mid back pain after a long time sitting or driving. No-Slip Rubber Bottom and Adjustable Straps: To keep the back support cushion in place and prevent the lumbar pillow sliding down and make sure the backrest suit perfectly for any office chair, computer chair, desk chair armchair, sofa, couch, car seat, SUV, truck, wheelchair and recliner seat etc. High-Density Proper Firmness Memory Foam: It can take the shape of your back and curve wonderfully and provide optimal Lumbar support to relief your back pain. No Worries for flatted out.