SIZE: 43*36*13cm ERGONOMIC DESIGN : The lumbar support pillow with ergonomic contoured structure, can be placed anywhere along the back of a chair and and fit any height person, just slightly adjust position of it. it aligns your back support and lumbar support, while gently protecting and strengthening your muscles, relieve muscle soreness. SUPPORT FOR BACK AND LUMBAR : If you spend a lot of time sitting or driving, this lumbar support pillow will gives you the support, relieve muscle fatigue. is perfect for middle & lower back pains and lumbar pain relief. WIDE RANGE APPLICATION : Suitable size, lightweight and portable, 3 colors to choose. it's suitable for most of office chair, car seat, wheelchair, gaming chair, recliner, home chair or seat, airplane or train, perfect for office workers, drivers, teachers, students, people in a wheelchair, pregnant women etc. TWO-LAYER CONSTRUCTION & EASY CLEANING : With breathable cover and soft cover, this back support pillow can keep back air circulating well. cover is removable and machine-washable hand-washable for easy cleaning.