Dynarex Instant Cold Packs - Non-Toxic - Disposable Cold Compress for First Aid - Portable and Conforms to Body Contours - Quick Activation - 4" x 5" - 24 Count

Why did you pick this product vs others?: Used these for a while and they work great and last a long time. Easy to use and carry with you for when they are needed.

As a former varsity volleyball player and currently an avid outdoors person, I have been using cold packs when necessary for years. No instant cold pack can compare to ice cubes in an ice bag in terms of the amount of coldness or length of time the coldness lasts; however, there are times when you can't immediately get ice cubes and/or carry your ice bag (or your ice bag leaks during a 3-hr flight -- that was fun, especially for the next traveler assigned to my seat). That's when it's more than handy to have an instant cold pack -- it can literally reduce the pain of an injury, animal bite or insect sting, just to mention a few uses. I have tried just about every instant cold pack available -- big box stores, pharmacies, online, you name it -- and with one exception up until now, they are pretty much worthless. There are ones impossible to activate, ones which harden like a rock if you store them in your closet for less than a month, ones which are barely cool when activated, ones which are the size of postage stamps, ones that don't even stay reasonably cold for 10 minutes. Up until I discovered the Dynarex Instant Cold Pack, the only one I could depend on was the Ace Instant Cold Pack at $7.67 for a twin-pack on Amazon (much more at my neighborhood pharmacy). That comes to $3.83 apiece. I bought the Dynarex 5"x 9" instant cold packs in a box of 24 (yes, twenty-four) for less than $20 delivered. That comes to $0.83 each. I checked each pack in the box and all are just fine. I have used them and they easily activate, they are generously sized (larger than the Ace) and the cold lasted at least 1/2 hour. I can highly recommend them. No, I wasn't given any external incentive to give this great review; my internal incentives were 1) to help other people find a portable, easy-to-use, handy and really decent quality instant cold pack and 2) to give a shout-out to a great instant cold pack manufacturer who deserves it.

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.

I Am with you mate i bought 2 boxes of this "ammonium nitrate" but when mix with aluminum powder and shot with a 7mm or ak 47 does not explodes. there is two options this might not be PURE 100% Amonium nitrate OR! My aluminum powder does not work or is not dry so to prove that i just order brand new aluminum powder to give it another try if it does not work i am pretty sure the manufacturer added a sustance to prevent the product to be explosive, the reason it makes me think that is because i have bought in the past this same product and it has work REALLY GOOD! but all of the sudden does not work now. i have experience using this product as a cold pack because i got burned with my ak 47 accidently touch the hot barrel so i apply one of this cold packs and it works AWESOME! really cold and it does the job really nice that is why i am rating it 5 stars but for as long as explosive targets goes this didnt work for me hopefully it was my aluminum powder will see as soon i get my new aluminum powder i will be rating it again in the mean while i already order another brand to see the diference if you are intending on using this product as a target thanks for reading. if you want this product fot is original purpose IT WORKS GREAT

I’m recovering from a pretty sick injury, and while I’m walking fine, I sometimes fine myself in immense pain. The only problem with this is that I work in sales. While I’ve minimized the amount I have to go out to the office on calls, I still have to go and visit my clients, and while I drive everywhere, it’s still a bit of added movement on my knee where I can’t necessarily always afford it. While with a client, who luckily is also a friend, my knee was feeling so terrible that I had to sit there for an additional hour because I was in so much pain. Luckily, my buddy’s intern ran out and got me one of these ice packs and wow. It worked like a charm. You just smash the pack and it gives you instant relief to your pain. I bought these online (wow, so freaking cheap compared to in store) and started keeping them in my trunk. It’s made a huge difference in my daily work life and I even use them at home. While at home, I do some of the exercises my physical therapist requested I do at home, then ice my knee, and then top it off with a bit of this ThermaChill Pain Relief Roll On Cold Therapy, 3 fl oz. - Top Choice for Arthritis, Migraine Relief, Joint & Muscle Pain - Limited Time Offer: Buy 1 Get 1 Free! stuff that an ex bought for me. It works great because it cools and warms the pain until I’m able to fall asleep. At any rate, definitely buy these packs even if you don’t have an injury, they’re so convenient and easy to use.

Cold as a cup of stale coffee. I've kept them stored properly, but when I recently went to use on, it didn't really get cold, just cool, and not for long. Thinking that was a fluke or a bad pack, I tried another one today, against my bare skin. It got about as cool as a wash cloth with cold water, and after ten minutes that was gone leaving me just a bag of tepid water. I was expecting these could be used especially for heatstroke or heat exhaustion, but I'm thinking I'd be better off just throwing them all out. This is NOT how instant cold packs usually behave. The seller, Mymedstreet, was incredibly responsive and offered to take them all back for a full refund. Dynarex says there is a definite four year expiration date--coded into the lot number, and all that you can do is call them with a lot number and they will decode it for you. No way to actually determine if the stock is fresh or expired, until you have it in your hands. That's really inexcusable.

I'm not entirely satisfied with these cold packs so I'm giving 3 stars. Pros: They're conveniently sized and not too expensive; they get cold instantly. Cons: They get cold, but not super cold - so, more like the temp of a bottle of water coming out of your fridge as opposed to the temp of an actual ice pack from the freezer; besides not being very cold, they don't stay even that cold for long - 15 mins passes and it's like having a cool water balloon on you; they're super poofy and sloshy - meaning there seems to be a lot of air inside, so the liquid moves around a lot - it's not like an ice pack that will just sit in place because it will form to your neck, shoulder, knee, whatever - it's like trying to get a balloon, filled with 1/2 water and 1/2 air to sit still. Also, and this should be apparent, but I'll point it out anyway - condensation forms on the outside as soon as it cools down and they're just plastic so they're slippery and wet - if you don't like that, you'll need a towel or something to wrap them in - but then, the fact that they don't get very cold comes into play and in 5 mins or so, you won't feel any cold through a towel. So if you just need something for a quick cool down - maybe to sooth a headache for 10 or 15 mins - they're fine, but that's about it.

First of all, these things are quite a deal here on Amazon. Most instant cold packs cost more than $1 per pack. So that's already a great thing. Secondly, they WORK. I've had plenty of instant cold packs where you're supposed to squeeze and rupture the inner pouch, and you're sitting there mangling this plastic pouch because you're not sure if the inner pouch has ruptured or not. Absolutely not a problem with these. It's incredibly obvious when the inner pouch has ruptured, and it's simple to do so. No more calling over your buddy Hercules because only he has the ability to pop the inner pouch without breaking the outer one. Cold lasts for upwards of 20 minutes, which is also a pretty good plus. I am mildly worried about how easily the inner pouches might pop, though. I'm wanting to throw a few in my softball bag, and I don't know if they'd survive it. I'll find out, though. Definitely going in my first aid kits.