The right place for lumbar support is the natural inward curve of your lower back, usually around the beltline or slightly above it. This guide explains where lumbar support should sit in your back so it can actually do its job. If the support is too high, it may press into the mid-back and leave the lower back unsupported. If it is too low, it can push into the pelvis or hips. Good lumbar support should feel gentle, stable, and comfortable, helping you sit upright without forcing your posture.