and you will get a notification from a phone app to say it has reached that optimum point, plus the mug will keep it there for three hours. Our Thermal range has been designed with drinking pleasure, reuse and occasion in mind, rather than extreme temperature retention.

But this cup is equally good all year round because it keeps hot drinks warm for up to 12 hours, and the insulation keeps the outer bottle cool enough to handle safely. We also love the freedom of choice you get with the KeepCup design your own and think the S’well traveler is a summer must-have for those iced coffees and picnics in the park. Travel mugs are designed to keep drinks hot or cold for hours on end during road trips and outdoor adventures; they tend to be made from stainless steel and come with features such as lockable lids and autoseals. And while the purple colourway we tested is now sold out, it’s still avaible in a mustard knit pattern. The cup is a charming, colourful little number too, with plenty of options to choose from, including whether you have a silicone or cork heat band.Steam release after sealing may cause condensation within the plug mechanism and pool into droplets on the top of the lid, so we'd recommend you don't carry your filled coffee cup in your bag. The material serves as an effective alternative to plastic, and, handily, this Huskup cup can be slung on your compost heap when you’re finished with it. This double-walled reusable cup has vacuum sealed thermal insulation to keep your drink hot (or cold) for longer.

The cup has a sleek, black design with orange branding and is made from stainless steel, so it is super durable yet compact and perfect for carrying in a bag. A touch-sensitive display on the front of the mug itself can also be used to check and change the temperature, so no worry if your phone is not at hand. Having only a dinky bag is no excuse for not carrying a reusable coffee cup because Stojo’s design collapses down to a couple of inches high for easy storage on the go. The only thing is that drinking them on the go isn’t always possible because an infuser is essential, and few travel cups feature them.Temperature duration depends on a few things like volume, drinking hole diametre, lid insulation, and even room temperature during testing.