Ultra Cool Tech’s Innovative Cooling Solution
The Berg is Ultra Cool Tech’s new running neck bandana featuring our original Glacier technology. Its distinctive boomerang shape fits comfortably around the neck, delivering quick cooling so runners stay fresh throughout any distance.
Designed to overcome the common issues found in other cooling bandanas that use ice as the primary fuel for cooling, the Berg is a lighter solution that can cool for longer using only water. Ice is an optional addition when itʼs available during a race.
It's very easy to use. To activate the Berg, just soak it in water from a fountain or stream, or pour water over it from your soft flask or bottle. Whenever you need a boost, just add water to recharge its cooling properties.
The Berg is also available in a white label or OEM version. Please contact us if you are interested.
Berg features
The Berg combines several features to help cool athletes for longer with just water:
- A boomerang shape that covers the neck and shoulders. Specially designed clips help keep it close to the skin to maximize Active Cooling. You can tuck the ends into a shirt or suit to cover the chest, or position them over the shoulders. This flexibility allow athletes to choose their preferred cooling areas.
- Different materials that store water. The Bergʼs fabrics absorb and retain water, keeping cooling fuel close to the skin. The material is thicker at the back of the neck, a particularly sensitive area.
- A small ice pocket at the back. It holds a few ice cubes for rapid relief. Unlike with a typical ice bandana, the surrounding material absorbs the meltwater, extending the cooling effect after the ice is gone.
Why is ice a better cooling fuel than ice?
One critical point that sets the Berg apart from ice bandanas is that it uses water as the main cooling fuel. And that's for a good reason: it's a much better cooling fuel than ice. Most people believe that the best way to cool down the body is to use ice, but physics tells a different story.
Active Cooling works in a very simple way: ice absorbs heat as it melts, and water absorbs heat as it evaporates. That helps remove the excess heat produced by the body during exercise.
For the same amount of water, evaporation requires a lot more energy (cooling watts) than melting, as shown in the table below.
| Phase Change |
Estimated cooling power |
| Ice melting |
~93 W |
| Water warming from 0°C to 30°C |
~35 W |
| Water evaporation |
~675 W |
| Total |
~803 W |
Evaporation can provide more than fives times the cooling power of ice melting and water warming combined. That's why the Berg is designed to use water as its main cooling fuel, with a little ice as an option. It's simply more efficient.
Learn more about the Berg in our latest blogpost.
Photos: Pablo Marcos
