What is lumbar support on an office chair?

Lumbar support is a feature built into the backrest that pushes gently against the lower back (lumbar spine, L1–L5 region), supporting the natural inward curve of the spine that tends to flatten during prolonged sitting. Fixed lumbar is built into the backrest shape; adjustable lumbar allows height and depth control to precisely fit the user's lumbar curve. Dynamic lumbar support moves with the user's back as they shift postures. Proper lumbar support reduces disc pressure and lumbar muscle fatigue significantly compared to a flat backrest. FindOfficeFurniture.com has office chairs with adjustable lumbar support — call 888-719-4960.