Note:The 2 pieces of buckle straps were used to adjust the curvature rate,please do not attach it in the chairs.The elactic strap in the middle part was exactly the one can attach in the chair to fix the lumbar support. Long sitting may hurt your lumbar,and suffer low back pain. Our Orthopedic design lumbar supports relieve tension and keeps spine in proper alignment In modern times, humans are spending more time than ever in the sitting position. Driving, eating, watching TV, gaming, working, all such things and many more are done in one chair or another seat. Feathers a unique countoured design which well cradle and support your lumbar parts,and alleviate low back pain. Also in order to meet different requirements, our chair lumbar supports designed to be adjustable in curve,you can freely customize a comforable curve that you want by fastenning the buckle. Specially in cold weather,when our chair cushion and lumbar supports give best care for your back lumbar,also keep your body warm. Help you go through the cold days smoothly. * Develop a healthy sitting way- As a coutoured shape that conforms to the lumbar's natural curvature,this lumbar pillow always keep you in a healthy sitting way. * Relax your lumbar and improve work efficiency- Back pain relief function would relax your lumbar well,you can finish your desk work in a more relaxed way. * The soft chair cushion work together with the lumbar supports to avoid sciatic pain. * * Fits perfectly in office chairs,dinning chairs and at home on your sofa, recliner, or in your bed as a bedrest while reading or watching TV. fits great in airplane seats and vehicle seats to prevent and reduce stiffness on trips as well as lower back pain. * The lumbar supports and chair cushion set are cold winter essentials, keep you lumbar and butt warm when sitting on the desk chairs