【Back Pain Relief, Orthopedic Doctors Recommended Lumbar Pillow】Unique ergonomic design, PTBYSMY lumbar support pillow is highly recommended by orthopedics doctors.It can perfectly fit with human spine and provide us with comfortable and soft back support. Adopt 100% high density memory foam, made of polyurethane, it will never flatten down. Safety material, back support pillow is suitable for most people even for maternity women and children. 【3D Embracing Shape, Lumbar Pain Relief Physically】Long time sitting without back support could potentially cause back pain and scoliosis problems. Adopt special 3D-embracing design, this lumbar pillow for chair will share the pressure on the lower back. By fitting the curve of the lumbar spine seamlessly, this back pillow can provide you with enough supportive than other roll-back pads. 【Mechine Washable & Breathable 4D Mesh Cover】With an upgrade 4D mesh cover, this small back pillow is breathable and sweat-absorbent which can always keep dry and cool . The detachable cover is convenient for machine washing. Tips:Do not wash the pillow insert. 【Multi-Occasions Suitable】Feature with a stylish and convenient design, you can use this memory foam chair cushion on the office chair,car seat,sofa back,or bed. PTBYSMY back cushion help your lumbar spine return to the healthy 26°lumbar curve and correct your sitting posture. 【Multi-Occasions Suitable】Feature with a stylish and convenient design, you can use this memory foam chair cushion on the office chair,car seat,sofa back,or bed. PTBYSMY back cushion help your lumbar spine return to the healthy 26°lumbar curve and correct your sitting posture.