The Heatstick works with an accompanying Fuelstick and water bottle and fits standard wide-mouth bottles
Heatstick is a stove alternative for military and outdoor applications
The sleeve insulates your bottle
The Heatstick from Danish company Heatgear attempts to give backpackers and military personnel a better alternative to the camping stove. Not only is it lightweight, but this flameless heat source can also cook while you hike.
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