MFH Gel Heater

The warmer works without problems, is reusable, cheaply made, and solid. The downside is the short operation time, although that hour was usually enough.

Good warmer – works for an hour, which is enough to get warm. After reboiling, it regains its functionality. The downside is the short heating time, but for me that's enough.

This gadget has made my hands warm in winter many times, and at night it also warmed my feet in the sleeping bag. Great thing – it heats well and you can always renew it in boiling water, unlike chemical heaters.

The product meets expectations. It will be perfect for trips into the forest. I definitely recommend it – I plan to buy again. I think it will heat the chest area very well.

Solid and efficient warmer. I won't give an exact heating time because it depends on the weather. It has a lot of liquid and an appropriate size. I tested both smaller and larger ones – the larger ones are definitely worth it, because the small ones heat much shorter. I regenerated it about 30 times already without any problems. The bag is durable, it never activated accidentally. Among sodium acetate warmers, it's hard to find a better one.

I bought three warmers – two work without any issues, but in the third one, the metal disc is so stiff that it could tear the bag with the liquid if pressed too hard. I think there should be better quality control at the factory.

It serves its purpose, lets you warm up if needed, which is very important for thermal comfort. The first hour it is very warm, then it starts to cool down.

After activating by clicking the disc, at first it heats up a lot, then gradually weakens – one hour of heating is the maximum. It looks delicate, but in reality it's durable and withstands transport in equipment well. I recommend it.

The warmer works well – it heats up strongly at first, but the temperature drops quite quickly, and after an hour it’s much cooler. Big plus for being reusable.

The warmer is very practical, especially during long walks on cold days. It quickly warms your hands, is lightweight, easy to use, and you can always have it with you in your backpack.

The warmer can be used multiple times, which is a huge advantage. It's quite big, well-filled, and doesn't seem cheap. It effectively warms up the body or hands in a pocket. Very good value for money.

Great size, perfect for warming up your whole hands. Keeps warm for almost an hour, though you need to fiddle a bit with the hard plate when activating, but that shouldn't be a big problem.

Very good warmer, it worked for at least 50 uses, but when I tried to heat it directly in the kettle a few times, a hole appeared from contact with the heater (next time I'll try to isolate it). I'll definitely buy a few more.

I've only used it once so far, under my jacket, when I was surprised by a cold wind coming off the trail. The warmer, under a drafty jacket and fleece, didn't give off much heat, but thanks to its size, it warmed a larger part of my body. The most heat was between 3 and 15 minutes after activation. After 40 minutes, it was only good for warming hands in my pocket.

It heats up really intensely for the first 15-20 minutes, then gradually becomes less warm, and after about an hour, it's lukewarm. It can be reused multiple times after boiling. It's a good solution to stay warm.