Hot to Go Reusable Heat Packs - Buy 4 Get 4 Free!

I purchased these to help maintain heat in my wetsuit for cold water scuba diving. We have some rechargeable warmers we use when we're camping, hiking, or whatever, but I needed something that could be submerged. When I tried them out, I was worried that the heat would be too intense. It was plenty warm, but not unbearable, and very nice after I was at depth for a few minutes. I'm glad they came in an eight pack so I can do repetitive dives when it's inconvenient to boil water between dives to reset them. When I'm doing longer dives, I can place extras in my wetsuit and activate another one when the first one starts to fade. The round ones fit really well on top of my toes without making my feet feel squished. I left them out in my toolbox in subzero temperatures overnight and they didn't leak or activate.

Bought my first batch of them 7 years ago! The last one is still holding steady. For my needs they stay hot enough and I would say, on tender skin, they almost get too hot! Easy fix to wrap in a paper towel. Besides health needs I also use them for transporting baby chicks! Came back to buy another set!

Great reusable product for emergencies. It does only last 30+ minutes depending on massaging it after activated. 1 major flaw which is more on the user is don't give it to a drunk friend and say crack this to activate. I just wanted to show off this cool product. But the drunk genius friend thought it was like a glow stick and needed to break the internal activator so he slapped it over his knee which caused it to explode all over me, him, and my truck! I regret offering him a ride to a show for his birthday but I also didn't give him an exact explanation that he only needed to bend the internal medal tab.He went out covered in the (luckily non toxic) fluid. Heard he glowed like a 15yrs old bath towel under black light at the club. And my truck is still covered in the chemical and smells of it. But starts to clean up with a warm rag. It will eventually fully clean off. I'm down one of the larger packets and we both have a story to tell. But don't use it for any impact sport like skiing. Have them for emergency survival and they do work for that of needed. .....

UPDATED 11.12.24 - Once you figure out how to activate them, they work perfectly. Reactivating is MUCH easier than the 1st activation. TIP: Bend the metal disc backwards - they are slightly concave, so bend in the opposite direction - I read this on someone else's review when I was unhappy and it totally worked.I have wrecked 2 of the 8 by using a hammer to hit the small metal disc for activation....cannot get them activated in any other manner. Unfortunately, this causes them to split at the seams and the company says to not boil them if they leak. The other 6 I have not taken a hammer to YET!!! Once activated they do provide nice heat....if you can activate them - key issue! TOTAL WASTE OF MONEY!!!!

This product is great. I use instant heat packs for my ileostomy and these reusable heat packs are a game changer. The customer service responded immediately when I told them about a defect and replaced it very quickly.

I have been on the lookout for the best type of hand warmers for three different situations: (1) for emergency preparedness, (2) for kids' hands while biking year-round on the cargo bike (they get quite cold because they're stationary behind me as we ride through the wind), and (3) for the school aged kids as they walk to school and at recess. I considered disposable hand warmers (but don't like the waste), electronic hand warmers (looked too expensive to start with), and these. I was especially drawn to the low price point + the fact that these are reusable.As we've used them the last six months, however, my biggest complaint is that their heat simply doesn't last long. They only have 10-15 minutes of good heat and then they become bulky rocks in the kids' pockets. This makes these nearly worthless for emergency situations. I started keeping them in my pannier for cold hands while biking, but I have now found 3 that got punctured and then crystalized all over the inside of my bag (ugh). I also keep finding them hard in the bottom of the bag, having gotten activated from the bumping while we were riding. Together, that makes them less than ideal for bicycling purposes. That leaves me sending these with the kids on their way to school. Because it is a short walk, this has been by far their best application. The kids take two apiece: one to enjoy on the way to school, and one to crack open at recess time. They're very pleased with this, and share with gloveless friends on cold days.Even the school application has its issues, however. The biggest problem is that these are fairly cumbersome to "recharge". It takes about 10 minutes of boiling to get them reset, which we do when the kids come home from school, but then I have a sopping wet rag every single day (because of the boiling instructions I found on YouTube) that needs to be dealt with. That means it's roughly the same amount of boiling time as actual use time, which feels slightly absurd. In order to not waste water, I let the water cool and then use it on my house plants-- but that's a lot of water when we're using them every day! In an emergency scenario, finding that much water to boil and having a fire to boil it sounds like a lot of requirements for a mere 10-15 minutes of hand heat.Would I give these another chance? I don't honestly know, but only for the school application if I did. I will next try buying an electronic hand warmer (and then eventually buy one per family member if the first one tests well). Even if the electronic ones work out, I may still continue using these reusable ones for school because they are so much less expensive-- and therefore I am much less worried about these getting lost, stolen, or broken in the school context. For emergency preparedness, I have thus far purchased a large stock of the disposable ones for our 72-hour kits and our car emergency kits because at least I know those work very reliably, even if they unfortunately get trashed afterwards. The electronic ones may replace those, so long as I keep them well charged during normal times, and perhaps I would keep a couple of the electronic ones on my bike.In all, the search continues. These are inexpensive and definitely work in limited scenarios, but they're also short-lived heat and a lot of work to maintain.

Sometimes you stumble on a product that you know you will be using yourself , recommending to friends and this happens to be one such productVery easy to useWorks greatReally would recommend

These are perfect for my use... I mostly use them in my pockets to keep my hands warm while I walk my dog or wait in outdoor lines. Gets nice & warm... but only stays warm about 20min or so. And to carry more, for more lengthy needs, can get heavy & crowdedin my pockets.I have about 10 for the 2 of us. I'll order me once these stop working...But I've had them about a year & they keep resetting (you have to boil them to melt the crystals that form. )