New ergonomic design: lumbar support pillow adopts a curve design that fits more closely with the spine. Memory foam back support helps relieve mid, upper, and lower back pain and back tightness, helping you maintain a healthy posture in a long sitting. High-density memory foam with a unique formula: The interior of the lumbar support pillow for car is filled with thicker, High density, precisely molded, and durable fabulous memory foam, the back support pillow for chair can change the firmness according to your body temperature, bringing support while maintaining support for more comfortable support, the back pillow for sitting is perfect for drivers, teachers, students, people in a wheelchair, office workers, and elder, etc. Breathable & hypoallergenic elastic cover: This office chair lumbar support features a breathable cover with a zipper design so you can easily remove it for machine washing when necessary. cover has undergone many shrinkages and breathability tests before mass production, which can keep your back cool and comfort, dry for the best experience for all seasons. A great gift for family and friends: back pillow for office chair comes in a vacuum-packed, the chair cushion can reach a suitable size within five seconds of opening the package, and the backrest pillow packaging is easy to carry and is very convenient suitable for gifts for birthdays