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.

I have been using these for months and I couldn’t tell you the science behind it but I throughly enjoy how I have been able to use them for just about anything. The heat lasts for at least 30 minutes and it could be up to an hour. I enjoyed getting the 8 pack because I don’t need to boil them as often. The quality is amazing.

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!

I bought these as stocking stuffers for my wife and kids and I'll say upfront that I'm pretty happy with them.Positives...All 4 packs seem to work as expected and none of them had already "activated" in shipping. They heat up quickly and at their hottest, feel warmer than those cheap throw away ones...I say feel because I haven't actually tested the temperature. Boiling to "recharge" them was no big deal and I like that they can be used repeatedly as I try to avoid creating needless garbage when I can and the throw away ones are needless garbage. They are made of a thick plastic/vinyl material and while I'm sure I could rip one open...they don't feel cheap.On the downside...Like some other reviews have mentioned, the initial activation took a few tries to get it going and I was worried that they were duds. But we just kept trying and they eventually started. On subsequent uses they seem to trigger right away. So I'm sure it just has something to do with breaking in the activator. If you have trouble getting them to start, just keep clicking the little metal disc and it'll eventually go (probably).Also, I wouldn't say they really last as long as advertised. 30 minutes on the larger size is about the max and probably 20 minutes on the smaller size. When started, they quickly hit their peak heat output and then slowly start to taper off. I'm wondering if they might last longer if they were wrapped in something? Not sure on that but I'll probably see if I can figure something out.But yeah, overall they are nice and I'm happy with the purchase.

Quick Activation and Long-lasting Heat: I've had these warm compress gel pouches for a while, and they're fantastic. Activate them by bending a metal piece inside the bag and you get instant heat that lasts for a solid 15-20 minutes. I've used them for everything from relieving cystic bumps to soothing muscle and period cramps.Resetting is a Breeze: Resetting these pouches is pretty straightforward. Boil a large pot of water, gently lay the used bags in it, and let them simmer for 10 minutes. No need to stir or move them around. Once they're done, lay them flat on a kitchen towel to dry. I usually do this over my morning coffee—it feels effortless.Travel Tips: These pouches are great for travel but remember, you'll need boiling water to reset them. Simply pouring hot water over them in a metal ice bucket won't cut it—they'll harden up again quickly. And don't even think about microwaving them! If you're in a hotel, maybe room service could help reset them for a tip.Overall, these pouches offer great value. I'll definitely be bringing them on my next holiday. Highly recommended!