I have chronic pain and arthritis and sciatica pain, if your using ice cubes in a zip lock bag or a bag of peas, STOP!! This cold pack is so comfortable, nice a squishy!! It's never rock hard!! And it stays cold a long time!! It molds to your body so if you have an area like your butt or back or back of legs it's very comfortable, I used to take 2 ziplock bags and use crushed ice, talk about uncomfortable!! And the ziplock bag would always leak!! So I tried 3 zip lock bags! Still leaked!! These cold pack are a nice size, they are big, but not to big. I use it for another thing to, if your power goes out, I will put my milk and deli meats on top of it and stays cold for many hours saving me money! Keeping my food cold! I have had mine for 9 years!!! Not one leak! I just bought my step dad 2 he has bad sciatica pain, and hip and knees.. He just got back from Aspen skiing, I'm sure he is glad he has them!! He was using ice cubes!! That's when I said I'm getting you something more comfortable!! He loves them! Hope this review helps.
Rating: [5 of 5 Stars!]