Adjustable Lumbar SupportAdjusts to support the natural curve of the lumbar region of your spine. Lumbar support can be adjusted vertically over a 4.5-inch range.
Adjustable PostureFit SL SupportSL refers to the sacral/lumbar region of the spine, or the base of the spine up to the midback. Two individual pads flex independently; the top pad supports your lumbar, the bottom stabilizes your sacrum. System can be adjusted to fit the curve of your spine.
Zonal Back SupportZonal Back Support is provided by the 8Z Pellicle material in the backrest.