THERE'S nothing better than cracking open a can of Coke or beer in the summer.

But then there's that nasty surprise - it's not been chilled. Eugh.

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I've ordered too many takeaways on Uber Eats and received an unwelcome warm can.

If you don't have some ice available, the drink is basically ruled out for the entire meal.

What if the can could instantly cool itself? And without any electricity?

Well, that's what entrepreneur James Wyse, from Wales, is hoping to bring to the masses with his clever invention Cool Can.

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"We live in 2025 how have we not got self-cooling cans?" he told The Sun.

The 31-year-old came up with the idea in his bedroom, where he spent nights and weekends designing, tweaking, and testing prototypes.

More than 500 prototypes later he cracked it with a genius solution that can drop 10 degrees celsius at the push of a magic button.

"The cost has to be next to nothing basically because otherwise it's going to impact the consumer, and being a council estate lad, pennies count," he explained.

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Now as a small company, DeltaH Innovations, he's attracted the attention of Coca Cola, M&S, Carlsberg and other big names.

And it could soon end up on a shelf near you.

How does it work?

Essentially, the packaging is a can within a can.

The layer between the two cans contains salts - because of this separation the salts and the liquid don't come into contact or mix.

Before opening the can, you tip it and press a button on the bottom for five seconds which releases the liquid into the inner chamber.

At this moment, an endothermic reaction takes places creating an instant chill effect on the aluminium, thereby cooling the liquid within.

Verdict from The Sun's reporter Jamie Harris

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The Cool Can I tested contained water and it felt pretty lukewarm on the outside - not at all what I want on a sunny spring day.

It looks like any other large can you would expect a beer to be in.

Except, you can hear salts swishing like a gentle wave on a beach as you tilt it.

The other noticeable difference is the bottom where you'll find a button.

I turn the can upside down and press it for about five seconds, releasing an instant gush of liquid within.

Straight away I can feel a tingling chill on my hands.

That lukewarm feeling is completely gone.

You need to give it a few rotations to react fully and wait about two minutes for maximum impact.

After this short wait, I finally crack open the can.

I'm pleasantly surprised, the water is beautifully fresh and chilled.

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It's certainly not ice cold but it is really refreshing and much cooler than any can I've ever opened without the help of a fridge or ice.

I can really see this being a game-changer for all sorts of situations - out on picnics, long road trips, festivals, or even just corner shops who can do away with expensive fridges.

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