HEAT WAVE Instant Reusable Heat Pack - Medium (5 x 9 inch Size) Perfect for Stiff and Sore Muscles (Medium Clear 1-Pack): Made in USA

The media could not be loaded. When you are looking for hand warmers, you'll get presented with a number of different options. Let me tell you right away--steer clear from the "disposable" hand warmer packs. I honestly never used them again after getting these reusable hand warmers. The key is to choose the right size for yourself!THE GOOD:-Heat Wave makes the best hand warmers that I have yet found on the market, and I have tried a good number! The quality of the plastic is KEY. Lesser plastics (clear or thin ones) are all over the market, but those are more likely to rupture as you're using them and even when you are boiling them to "reset."-These retain their heat very, very well. According to my experiment, these quickly got up to a temperature of 130 degrees F and held it there for about 20 minutes. 25 with lots of moving around.-These are a great size to hold in your hand. This adds an added benefit of making them easier to move around and agitate the crystals inside. More agitation means more and longer heat!The OKAY:-These are expensive. That's not a bad thing when it directly goes into a better, longer lasting product.-Every 4 or 5 of these seems to be an oddball pack that still does its job, but it takes a bit longer to "reset" when boiling, it doesn't stay as malleable, and doesn't hold its heat as longThe BAD:-Even these, the best brand I have found of hand warmers, can break after repeated use. In general, I am able to get about two years of weekly use out of them before they risk breakage. That comes out to about 100 uses before failure, which is not bad but certainly not perfect-Not energy efficient. Yes, you get free/repeatable heat, but you have to boil water for 20 minutes every time you want to reset them. It's worth getting 4 or 5 of these so that you can batch the boils, but that's still a considerable amount of heat and energy that goes into them.All-in-all, this is the best brand of reusable hand warmers, and a pretty good size to boot. It's still small enough that you can agitate it and keep the heat going longer, but not TOO large. I have purchased these multiple times, and the vast majority of them retain their heat, flexibility, and use for years on end.4.5 stars!

These work amazing. It provides a comfortable, moist heat that works well for joint pain. They are completely reusable and work the same every time used. I like how portable they are and that they can be used and reset while camping. I would love to be able to afford to buy more so I wouldn't have to boil daily. nIf perfection existed these are things I wish could improve:- they would stay hot much longer. I get about 10 minutes of steady heat before they start getting cold- they would not take so long to reset. It takes a full 30 minutes-20 minutes of hard boiling water followed by 10 minutes of simmer- the disks would be slightly easier to activate

This is a great product. I have ordered several different shapes and sizes. I use it everyday for extreme pain especially to help me go to sleep at night. HOWEVER, the last one I bought on January 16, 2025, just sprung a leak - after using it a maximum of 100 times (once a day). Seems to me if it's going to last such a short duration, the price should be lower.

Due to an issue with my knee, I occasionally need immediate heat during the night. I wanted something that heated quickly and easily, and the Heat Wave Instant Heat Pack came to the rescue! I was so impressed that I bought two more just in case I needed to use more than one on any given night.SUGGESTION: At first, I was reactivating the packs in a small pot with a towel underneath the heat pack to prevent damage from the heat. However, I recently purchased a Cuisinart Preferred Pan 4-Pc Set on Amazon, which includes a deep steamer insert. This morning I used this pan with its steamer insert to reactivate a heat pack, which worked out wonderfully and avoided any potential heat damage.

I needed something that I could take on the go for my monthly cramps. I saw this demonstrated at the LA wine fest a few years ago and couldn't get it out of my mind, don't know why it took me so long to just get it. It stays hot for about 20 to 30 minutes as people say and I even use it to help keep food hot for when I'm going on a picnic or something. The best feature is that it doesn't have to be plugged in, it is an independently working product that just uses a chemical reaction to heat up. I needed something that I did not need to plug in and prefer anything that is reusable always. Boiling this item is so easy, I don't know if the people who had difficulty just weren't following the instructions properly, we're not adding enough water and just letting it go, or got defective products but I've been reboiling mine / reusing mine endlessly and I have not had any issues. I went with this brand again because it is something that I Saw demonstrated in person and thought I would try an option with a brand I trusted. I recommend it for people who need to use heat packs frequently.Again I'm going to repeat the tip I provided above of using this heat pack for when you have to keep food hot! It's pretty awesome.