The product is heavy duty plastic, not metal. I'm a little worried that something might crack someday with all the boiling water im putting in it. The plastic is probably safer than metal and less likely to cause accidental burns. I use it for camping, heating my water over a wood burning stove. After 7 hours, yutampo is still slightly warm at the bottom of my sleeping bag and then it's time to get up anyway. Performance is good as this unit holds about a gallon of water, but it does take space up at the bottom of your sleeping bag. It might be too big for a mummy bag. It's fine for an oversize sleeping bag and great for a bed. BTW, it takes time to heat that much water, and if I had to use it every night, it might be a hassle. To improve this product, I recommend a stronger, thicker bag which will be safer, hold the heat for longer, and not wear out. The terry bag is pretty weak.Read full review
Verified purchase: Yes | Condition: New
Fantastic product! Keeps my feet and bed warm for hours. Like that it doesn't need electricity too.
Verified purchase: Yes | Condition: New
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