Chairs with Lumbar Support The lower part of your spine naturally curves inward toward the belly, so having lumbar back support helps to promote good posture by filling in the gap between the lumbar spine and the seat. This will support the natural inward curve of the lower spine. Do lumbar pillows really work? As you slouch, it puts extra pressure on your lumbar region. This can lead to muscle pain and fatigue over time. A lumbar support cushion helps keep these muscles relaxed and at ease, rather than pulled too tightly. apex Lumbar Cushion Travel is the best lumbar support pillow you can get, thanks to its sleek design and its proprietary Temper foam, which never seems to go flat. And its lightweight size makes it easy to take with you wherever you go.