MEMORY FOAM CUSHION: Our back cushion lumbar support is filled with a high-density memory foam that helps improve weight distribution to relieve stress and tension on joints and muscles IMPROVE ALL-DAY FOCUS: Improving your posture not only helps relieve aches and pains but it can increase your ability to stay focused during long meetings or workdays, as well as when you're driving REMOVABLE AND WASHABLE COVERS: Each memory foam lumbar support cushion comes with one high-quality seat cover which is zipper designed, removable and washable COMFORTABLE LOWER LUMBAR BACK SUPPORT: A seat cushion designed to help improve your posture and proper spinal alignment. Back pillow can keep you properly supported so you can work, drive, or play games more comfortable ELASTIC STRAP AND WIDE APPLICATION: There is a elastic strap to keep this backrest for chair in place and prevent the lumbar pillow from sliding down. It’s perfect to use in most office chair, computer chair, desk chair, car seat, etc