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.

An older pack I have leaked the pink fluid out. The pack still works after the pink fluid comes out. I fact I like the pack better without the pink fluid. The remaining inner blue modules continue to freeze and the pack is way more flexible. I may cut the corner off my new packs to get the invadable pink fluid drain over with in a controlled environment like the sink and not on my Lazy boy chair.

I have had 2 back surgeries in the last 6 months and now I have a new issue at L5-S1. This ice pack has really been an answer to prayer! It stays icey for a very long time, and I am able to take less pain medication because of wearing this ice pack. I’ve only had mine for about a month so I haven’t had any leaks. But honestly, if mine started leaking soon, I’d just rebuy for the cheap price they are. When you’re in constant back pain, natural pain relief is priceless

These cold packs really work and will stay cold, for 6 hours or so, for me. If it’s an extremely hot day it may last less time. I tend to overheat so these work great! They also help with someback pain. The strap doesn’t help me just because I don’t use it anyplace that would be strap-able.The reason for taking away one star is that these do have a tendency to leak eventually. Even with that, I have had multiples of these over the years and will continue to look for them and replace when the leak is more than I want to deal with. When I notice the leak I just put the freeze part in a gallon freezer bag and put the whole thing back into the cloth bag. The 2 I have now are from Amazon and have not leaked yet in the last year.

Don't even mess around with any other kind of ice pack this is the way to go it stays Frozen for a long time but you can still bend it this is the way to go I recommend it to everyone and it comes in different sizes with a pouch that will wrap around your leg or arm securely

Really great!Great value, last so much longer than any other ice pack I have used. 20 minutes on, 20 minutes off and lasts for hours. Great for road trips for my sciatica. Highly recommend!!

Used ONE TIME and it leaked pink fluid onto and INTO my new $1200 mattress. I bought two of these 6x12's many many years ago (like 7 or 8 years ago) from my local Walmart and those two are still perfect (same CryoMax brand). I wanted two more but my Walmart no longer sells this brand/style.I did buy and try one that Walmart carried for a while (bought my third one last year), but it was some clay mixture inside and that one sucks :p it only lasts maybe half an hour. So I came to Amazon to get a couple more of the "better ones".I got this one 6x12 and a larger 12x12 on June 22. I opened and inspected them, put them in their blue covers and then into the freezer. I used them the next night, June 23rd.I have residual hot flashes (postmenopausal) and pretty sure I have hyperthyroidism (unmedicated), so my body is almost always out of whack at bedtime (overheating right away). I put these CyroMaxes on top of my legs and on my chest, or next to my cheek. When they work they're a godsend. They keep my body temp from spiking and I can fall asleep within an hour.About half an hour into relaxing - I felt dripping by my cheek. At first I thought it was condensation (as my other older ones also do just a little when they come right out of the freezer). I was juuuuust about dozed off when my brain said wait a minute - this things still dripping. At that point it had been in use for about 45 minutes.Get up, turn the light on, see what's going on, and it's leaking all over my bed! Run it to the bathroom sink - dripping all the way - it's just gushing out :p Take the blue over off and nearly all the pink fluid is gone with a huge hole in the corner and one of the blue sections in the middle of the row on that same side also burst/missing most of its fluid.I took one of my old ones out of its blue cover and compared the two then took the 12x12 out of its cover. The plastic they used on my old ones is far better than the new ones. The old ones have a more pliable, softer feeling (yet much sturdier) clear plastic casing. The new ones have a really brittle, crinkly plastic. This is not an improvement! This is a major design flaw. Once frozen the plastic just cracks under the slightest movement. I can only guess the Company went with a cheaper plastic to make the product cheaper to manufacture, which is an obvious mistake. They can't possibly "not know" that this is happening. I came here to read the reviews and see that this is a problem that many other buyers had.I won't return it because I already threw away the box (recycled it at my work the morning of June 23rd, then used the new ice packs for the first time that night) thinking there was not going to be any issue as I'd already had and used this same size and/or brand for years. My mistake :pIt's a real drag that the Company ruined what was once a perfect product - and now it's clearly Not a perfect product. I can't find any other brands out there that are as good as this brand USED to be...which now includes this brand itself...their quality fallen to the masses of cheap unreliable products...