The leak-proof mug is available in three stylish colours: black, white and green. It was initially priced at £29.99, but it ...

The Sip Perfect, as it's called, features a lockable lid making it completely leak-proof and is equipped with a unique HeatStore technology that cools drinks down to the ideal sipping temperature ...

But there's one feature that people are particularly in love with, and that's the HeatStore technology. The core inside the Ninja Sip Perfect absorbs energy to bring your beverage to the perfect ...

It locks shut making it totally leak-proof but also has a specially invented HeatStore technology that cools drinks down to the perfect sipping temperature in minutes but then holds it there for ...

Beyond its leak-proof lock, it boasts a novel HeatStore technology that rapidly cools beverages to the ideal sipping temperature in mere minutes and maintains it for hours on end, reports Wales ...

Ninja has announced huge savings with the launch of its Boxing Day sale, and savvy bargain hunters have found a way to get the £30 leakproof travel mug for under £4 ...