Reduces Lower Back Muscle Ache & Back – Fatigue when Working or Traveling. Simply place the Back rest over the back of your chair and adjust up or down until Maximum support is felt in your lumbar region. The simple counterbalance will hold the lumbar pain relief cushion in place so there is no need to keep adjusting it. It is ideal to relieve lumbar pain and is suitable for home, office and car seats. It is light, portable and most importantly very comfortable.