Dynarex Instant Cold Packs with Urea - Disposable Ice Packs for Injuries, Muscle & Joint Pain, Cramps, Headache - Quick Cold Compress Packs for Sprain & Bruises - Individually Packed - 24-Pack, 4"x5"

I just tried these for the first time - usually I get the full-size ones, also by Dynarex. These are about 1/2 to 2/3 of that size. I found both sizes effective and relatively easy to use. Have never experienced a leak or failure. My observations on these small packs as compared to the full size ones: Pros:: Easier to store/takes up less space in car, gym bag, First Aid kit Lower price Gets very cold, same as the large ones Easier to activate (you have to squeeze the pack, and the big ones can be a challenge if you have arthritis) Cons: Treats a smaller area - good for small bumps/areas of pain but would be too small to wrap around a limb Doesn't stay cold as long So I would recommend either one. Next time I will probably get the bigger ones because I use them on my neck.

Wonderfully cold!! ….for SIX whole minutes ! While it was cold, it felt great. But it just faded way too quickly. Not worth how expensive they were.

UPDATE: I’ve had a few of the packs leak before even activating which caused a sticky mess in the sports bag I use. It’s easy but annoying to clean - I’m just glad it’s non-toxic. I’ve learned to put the packs in Ziploc bags now, which has helped with that specific issue. I’ve used up my entire box of 24 and I’m still planning on ordering more of this brand. Still keeping at 4 stars. ORIGINAL REVIEW: I bought a box of these so I can bring some with me to my kids’ sporting events. They have already come in very handy for both baseball and flag football. Between my son, his teammates, and even opposing players, I have used up at least half a dozen! They are compact, easy to pack in a sports bag, and easy to activate (I just smash it against something or use my fist). I gave it four stars because they don’t seem to stay very cold for a long period (for what I would expect) but I guess it could be somewhat due to their compact size. Overall, they work great for what I bought them for and I will definitely purchase more!

It got cold real quick, but only stayed cold for 20min. Of course I live in AZ, where it's 3 digits. When it was below 100°, it did stay cold longer. Price is great. I like that it had no chemicals cause I used it on my service dog to help her stay cooler. Worked good under her vest. I'd buy it again.

They are difficult to "pop", it says squeeze,but there's so little stuff inside you can't just squeeze it to pop it, you have to slam it between your hands. Also, it only stays cold for about 5 minutes. I wouldn't buy again.