lumbar support adopts High density, thick, durable fabulous and precisely molded memory foam which insures a firm comfy fit and enhance your comfort while retaining its density. The chair pillow can provide enough supportive and more comfortable than lumbar roll or mesh back support, and can also be used as maternity pillow or as back pillow wedge during pregnancy. Ideal for drivers, teachers, students, people in a wheelchair, office workers, and elder etc. If you spend a lot of time sitting on office chair, gaming chair and driving in car, this lumbar pillow will perfectly help you. The back support for car is designed ergonomically to relieve upper, mid and lower back pain and back tightness, support you to achieve a healthy posture and helps maintain the natural curve of the spine. Removable and Washable Cover with Extra Inner Cover-Chair back support with the breathable cover,easy to disassemble.Just zip off the fabric cover,toss in the wash with your other clothes,and replace when dry.The easy-clean cover means that you no longer need to worry about getting your back support pillow dirty.Extra inner cover to avoid it polluting by sweat and dust.Skin-friendly breathable,lumbar support can keep back air circulating well,just makes you feel comfortable all day! High-Density Space Memory Foam - Fully optimize the shape and softness of the support surface.Firm yet comfortable,lumbar pillow supportive memory foam holds your waist in the right posture.Unlike other traditional back support pillow that slip and fall out of place or with insides that move around,the memory foam stays put,cradling both sides of your spine without feeling rock-hard,it is ideal for all-day use,whether driving in the car,traveling on a plane,sitting at your desk,or at home.