Definitely take it back. There is nothing better on a sore back than moist heat. I absolutely hate those icy hot patches, which I think are a waste of money. I always have two or three regular ice packs in the freezer which I use for twenty minutes at a time which are terrific. You have to stop lifting heavy things. This sets my back off every time.I wish I had mentioned that I was going to get one before I went so you could have given me that advice before I bought one without the moist heat. I was looking at those, but I hadn't tried a moist heat heating pad before so I didn't know if they would help more or not. I think I'll take it back and exchange it because I haven't even opened the box yet. I just put an icyhot patch on for now. So I shouldn't have a problem exchanging it.