What is lumbar support on an office chair?

Lumbar support fills the gap between the lower back and the chair back, maintaining the natural inward curve of the lumbar spine during prolonged sitting. Fixed lumbar is built in at a set position; adjustable lumbar can be moved up/down to match each user's spinal curve. Adjustable lumbar is significantly more effective for multi-user environments. FindOfficeFurniture.com notes the type of lumbar support on every chair spec — call 888-719-4960.