How it works
1. Heat stones in your campfire.
2. Place them in the WarmRock Bag.
3. Bring the bag into your shelter.
4. Enjoy steady, flame-free warmth as the stones release heat through the night.
Gathering Heat
Natural stones are placed directly into the campfire to absorb and anchor thermal energy. This physical method allows the core of the stones to store high-capacity warmth, preparing them to heat your shelter without mechanical dependency or fuel combustion.
Natural Heat Release
The heated stones are moved into a protective system inside your shelter. They release warmth naturally over several hours, countering the cold ground. Because no combustion occurs inside the shelter, no carbon monoxide is produced, leaving only clean air and quiet for your rest.
SAFETY BY DESIGN
Safe in Every Breath
Passive Thermal Storage
Natural stones heated at the campfire and secured in a protective enclosure release heat gradually. This passive thermal storage provides safety by design, relying on the physical properties of heat transfer rather than active electronics or sensors inside your shelter.
No Indoor Combustion
There is no combustion inside the shelter, and therefore no carbon monoxide is produced. By keeping the fire outdoors, we ensure the air inside remains clean and breathable even when the shelter is fully sealed against the mountain cold.
Breathable Silence
Warmth is released naturally through radiation, requiring no fans, batteries, or mechanical parts. This ensures a silent environment for rest, free from the failures and noise often found in traditional outdoor heating systems.
Register interest
Leave your email address to follow the development of WarmRock.
A companion for the stillness.
MADE FOR THE MOMENTS AFTER THE FIRE
We invite you to follow our progress as we refine this ancient method of heat storage. Join us as an early user or partner, and help us shape the future of silence and clean air in the wild. Trusted when the fire is gone.
A SHARED PATH
Following the journey from the campfire to the mountain shelter.