Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Awesome relief for back pain

I purchased this product after a back injury which eventually resulted in surgery and soon found this wedge to be an amazing relief. It took stress and pressure off by back and allowed me to actually sleep through the night. There are times when I turn it around and put the sloping angle toward my feet -- it's just a slight change in the position of your legs. I highly recommend this product for anyone who has back stiffness or pain.