The brilliant Back Warmer allows sufferers of lower back pain portable relief. It's comfortable to wear, and can be reversed to hold the Cozee hot water bottle firmly in place in front of the body. This amazing item can be ready in just minutes after your pain strikes so there's no extended suffering through waiting. Just plug in the Cozee Generation 7 Electric Hot Water Bottle Back Warmer for 10 minutes and the warmth and relief will last from 3-5 hours!