Great Product! I have been using for over a month now, on a nightly basis, to cool down several areas of disc damage in my back. It's provides great relief from my chronic back pain, so that I can get a decent night's sleep. Manufacturer's instructions says to freeze for two hours, my cold pack stays in the freezer all day, and again, I pull it out every night for use, and put it back in the freezer each morning. (I use a thin hand towel as a barrier between it and my back to prevent freezer burn (which can occur, so be careful). The cold lasts a good hour against my inflamed back. Price was as expected, or maybe a little better. I would highly recommend this product. (Even if it has to be replaced once a year... It is well worth it!)
Rating: [5 of 5 Stars!]