Works, comfortable, right size.
I used it for my middle back and it gave me quite a relief. I fell asleep wearing it and found something strange on my tummy in the morning. It was the Velcro strap. I was surprised I was able to sleep with this strapped to me. It is that comfortable.<br /><br />I am not giving it 5 stars for one reason. I wish the outer layer had a removable/washable soft cloth cover on it. It is kind of harsh against the skin unless you put it on top of a shirt. With a thin T-shirt, I was fine.<br /><br />I only tried it as a cold pack -- will try it as a heat pack later.
Rating: 4 stars