LOWER BACK SUPPORT: Position adjustable lower-back backrest support transforms ordinary chairs into ergonomically correct seating. Move adjustable lumbar support cushion up or down just were you need it. ENGINEERED FOR COMFORT: Soft and luxurious, the engineered shape conforms to the natural spinal curvature aligning your spine and supporting correct posture; soft and durable polyurethane foam encapsulates the frame for comfortable use. LUMBAR PAD: The removable lumbar pad provides additional comfort and lower back support by reinforcing the lumbar curve PORTABLE SEAT CUSHION: A convenient handle makes it an ideal seat cushion for office chairs, car seat back support, and more.