The specifications state that hot drinks will stay steamy up to eight hours, whilst cold ones will be cool for 12.

While primarily made up of stainless steel, some parts are plastic – but it is BPA-free (an industrial chemical used in water bottles and similar that many people prefer to avoid). We deliver to Melbourne, Sydney, Brisbane, Adelaide, Perth and all other cities and towns within Australia, even internationally, overseas using our fleet of carriers. The steel is food-grade 18/8 so didn’t retain any smell or flavour from a tremendously strong cup of tea or coffee. Most of the ice in our cold drink was still solid after 24 hours too – you could fill your Thermos in the morning and it still be refreshingly cool the following day. Performance-wise, it placed 12 th overall in our temperature test, which doesn’t sound too impressive, but it was up against some much larger flasks that you would expect to beat it.

We were dubious about claims that it could keep iced water iced for 90 hours, and were flabbergasted to find it does exactly that (yes, really, almost four days). It’s a good value flask with solid all-round performance, finishing a respectable sixth overall in our temperature test. We also filled the flasks or cups with boiled water and then used that water to make a cup of tea for our 'tea test', and scored it out of ten based on how hot the resulting drink was. Easy to grab owing to the flexible carry loop (a genius addition which you can loop your finger through) you can unscrew the larger lid for cleaning and chucking in ice.

There’s no chance of vino spillages either as we can attest that the lid, which screws on easily and securely, is tried and tested leak-proof. Since the American manufacturer, Thermos, came to fame, the term has become slang for vacuum-insulated flasks. Preserving temperatures for hours, you can find flasks best suited for everything from frosty commutes and picnics (think wine cooling containers) to weekend camping trips. There are carnival glass and antique glass that could bring art and beauty into any place, when used as drinkware, or when they are embedded into the design of a building and other.A little ridge in the twist valve to make room for your nose is just another small design feature that makes a big difference to the comfort of drinking out of this insulated flask.