A London-based startup, Delta H Innovations, has unveiled a groundbreaking invention that could revolutionize the way we chill drinks—without the need for refrigeration. The company has developed the world’s first self-cooling beverage can, which promises an eco-friendly and efficient solution for keeping drinks cold on demand.
Introducing the Cool Can
The Cool Can looks like a standard aluminum beverage can but features a hidden power button at its base. At the press of a button, the can triggers a cooling mechanism that chills the drink without the use of electricity. The button releases water into the space between the can’s double-layered aluminum walls, where it reacts with proprietary salts embedded within the can. This chemical reaction rapidly cools the liquid inside, bringing it down to a refreshing 6-7°C (42.8 – 44.6°F) in just 10 minutes. A clever snowflake symbol on the can turns blue when the drink reaches the perfect chill.
A Game-Changer for the Beverage Industry
James Vyse, the Welsh founder of Delta H Innovations, explains that such technology is typically developed by large corporations, not independent inventors. However, he believes the Cool Can could be as transformative as Tetrapak. Leading beverage companies like Coca-Cola and Red Bull are reportedly exploring ways to integrate this technology into their packaging, which could drastically reduce the need for refrigeration, cutting both operational costs and carbon emissions.
Is It Practical?
Early testers, including journalists from The Evening Standard, have confirmed that the Cool Can works as promised. However, there is a trade-off: the cooling mechanism reduces the can’s capacity, meaning a 500 ml Cool Can can only hold about 70% of the volume of a regular can. Despite this limitation, Vyse remains optimistic, noting that the can is fully recyclable and energy-efficient. The Cool Can could soon become a must-have item at outdoor events, festivals, and anywhere refrigeration is not readily available.
Delta H Innovations plans to begin testing the Cool Can at music festivals this summer, giving consumers a preview of what could be the future of on-the-go chilled beverages.

