Non-adjustable Back SupportStandard back design includes built-in PostureFit, which properly supports the base of your spine, or sacral region. Sacral support is critical to help your spine maintain a natural S-shaped curve as you sit.
Adjustable Lumbar SupportAdjusts in height (over a 4” range) and level of support (up to 1” in/out) to fit the natural curve of your midback, or lumbar region. Recommended for people who like to work in a partially reclined posture. Celle Chairs and Stools with adjustable lumbar support also offer built-in PostureFit, which helps your spine maintain a natural S-shaped curve as you sit.