Using advanced double-wall vacuum technology, each cup is made of powder-coated high-grade stainless steel to keep your drink at the right temperature for longer and to preserve the flavour and freshness of its contents.

My one gripe is that the lid is stiff to operate - meaning anyone with joint issues or frail hands will struggle. Why we love it: Making your own brew (and refraining the urge to stop off at Starbucks) will be a total joy with this Good Citizen Coffee Company cup. As an espresso drinker, there’s not much point in getting one of these, as my coffee tends to disappear within two sips and fits perfectly in a much smaller and lighter cup. Namely, they keep your coffee hot for hours, rather than forcing you to drink it within a few minutes.In a world where most water bottles are fighting to be the best looking, the Air Up doesn’t even compete. Most of the reusable coffee cups in this edit are made from glass, bamboo fibre, stainless steel or recyclable plastic. This prevents leaks but it's not fully leakproof at very high temperatures or if the cup is fully inverted or shaken.

Not only is it safe, but it is very durable and infinitely recyclable,” says Natalie Byrne, content marketing manager at Go Outdoors. It suggests you care about the planet (cool), shows that you know your brews/beans/blends (also cool) and – if you choose the right one – elevates any office get-up. Well, it keeps your drink at your own preferred temperature - you can customise the temperature setting yourself - and it tells you when your drink has reached that preferred temperature. I received my new series 2 coffee cup last week and unfortunately like the rest of the reviews the lids are faulty. I threw them in my rucksack on my daily commute to test if they were leak-proof and I sipped them at my desk.The series one seems far better for longevity and has stayed looking in pristine condition for years. I also found the lid often took a little pressure to replace – nothing drastic, just a little annoying.