Due to an automobile accident when I was younger and also being overweight, I live with constant back pain. I tried “A Better Back” Back Support Pillow on my office Chair. I am on the computer constantly and the strain, stress and inflammation caused by the constant sitting can get very painful. I put the ice pack in the freezer then into the “A Better Back” Back Support Pillow. I expected to get 30-60 minutes of relief. I was blown away when the ice pack stayed cool for over 6 hours. The support pillow came with two ice packs and I expected to be switching them out all day, I only used one all day long. Keep up the good work with such a quality and effective product.