CryoMAX Cold Pack, Reusable, Latex Free, 8 Hour Cold Therapy, Large, 12" x 12" (1 Count)

These work great! I’ve had multiple sizes of these, and I feel like I’ve had packs that work really well, and others that last 2 hours. I think the longer you freeze it for initially, the better they will work. Try for at least 24hrs. My first one was amazing and would last overnight and still be cold and usable in the morning. I bought another that just did not stay frozen, and my third, the T shaped 12x18 size, definitely was not ready after the recommended 6 hours of freezing, but 24hrs later it was full frozen and super cold. Great for hip pain, lower back pain, and sciatica.

I have chronic pain due to MS and ice packs are a daily thing in my home. I have three other brands of ice packs and none of them come even close to this one. I needed an ice pack that lasted longer than 45 minutes on my back. After trying several brands with little success I came across this one. It is by far the best one I have bought so far.Pros:- Long lasting: If I put it on my back before I go to bed around 9pm, it will usually last until 2am or 3am which is unheard of for an ice pack. The length of time an ice pack keeps cool is largely dependent on where you put it on your body. For example, putting the ice pack on my back against a couch or bed prevents my body heat from escaping, so the ice pack is going to warm much fast than when you have it draped over your knee, etc.- Variety of sizes: I always struggle with smaller ice packs because my chronic pain is in a large part of my upper back. So fighting to keep the ice pack where I want it is a constant battle. With other ice packs, once I get the ice pack in the right spot - which can take a lot of scooting around, getting up and readjusting the ice pack, moving around some more, etc. This one is large enough so that it is very easy to cover the areas that I have pain in.- Ice Pack Cover: This ice pack comes with a fabric sleeve that the ice pack can go in to and an adjustable velcro strap to put the pack where you want it and keep it there.Cons:- Freezing time: This is the one drawback to this ice pack. I have the largest ice pack and it usually takes 12 to 14 hours to freeze completely. One key thing for this ice pack is making sure nothing is stacked on top of it in the freezer and that there is room around it for air to circulate. I have a standard freezer/fridge, so there's not much room in my freezer, therefore it takes much longer to freeze.

I was very hesitant to believe that these would work for eight hours. It’s summertime and I live in Hawaii. Ice packs seem to only last for 20 or 30 minutes around here. A couple days ago on the hottest day we’ve had in a long time, I brought my 2 ice packs with me as I had injured my back. I originally bought two so that I could wrap them around my arms after Allergy Shots to help with the swelling. Anyways, I started around 9 am , I ran around doing errands with it on my back. Around 1 o’clock, I was going to an event in the park and did not want to bring it. I had brought one additional old-school hard ice pack as well with me (Read the directions to see why). It has been inside a cooler. (and was not super cold anymore) I put the 2CRYOMAX ice packs on top of each other with the hard one in the pile as well. I took my sunshade for the windshield and laid it over the ice packs that were on my seat. The windows were up, and the car was in the sun with no other shades. It was crazy hot that day. I came back around 5 PM and absolutely positively could not believe that the CRYOMAX ice packs were still cold. I honestly was not expecting that, I had already been impressed. I don’t mean, cool, they were cold! Definitely read the directions and make sure they are frozen solid before you use them if possible. The liquid won’t freeze the same way the little balls will. I am beyond impressed with this product and have already shared it with the injection center at my hospital. The only two things that I would want to see changed would be the color of the liquid, if it were to leak, in my opinion, that color would be likely to stain. The other thing I would like to see them change is having the flexible plastic CYROMAX Pac, feel more durable. Don’t get me wrong, my gut tells me that it is extremely durable… It’s more of a psychological thing I think. I will update if there are any problems. Super impressed!!!! There are some reviews that say that it does not say cold. I think the problem is that they are not letting the balls freeze solid first. Additionally, I have noticed that once my arms are numb from cold, it often feels like any ice pack I’m using is no longer cold, but if I take the ice pack and put it against a different part of my body, I realize it still is very cold and that I was just numb to it. Perhaps some users have had that happen. I’m not affiliated and I have not been paid or given anything free or whatever it is companies do to sometimes get reviews. Even if these only work half as good as they did that day from now on, they’re still incredible! I’m just a super happy customer!