Rapid Cooling Tumbler

A tumbler that cools boiling water to drinking temperature by shaking, not waiting

The core of Koola is a sealed inner chamber machined to hold pressure — shaking the bottle for about a minute pulls water from 100°C down to 55°C, replacing the usual wait for a hot drink to cool on its own. A flip lid keeps that mechanism sealed between uses and prevents spills either hot or cold, in a body kept as compact as the pressure chamber allows.

Brand: 55°
Year: 2016-2
Product: 200ml rapid cooling tumbler
Material: 304 stainless steel / PP / silicone
Award: 2018 iF Design Awards