One downside of this expensive travel mug (apart from the price tag) is that if you're a 16oz coffee drinker or more, this mug might not be big enough. Its only size is a 12oz/355ml and there's no option at the moment to size up or down. No matter the material, just make sure the insulated mug you choose is approved for use with hot drinks and not just cold ones.

Cleaning this model is a bit harder than some of the others (a specially designed bottle-cleaning brush is recommended). Several different pieces need to be cleaned thoroughly to avoid staining and mildew buildup. The plastic sipping piece and rubber gasket on the lid can be popped out easily and cleaned separately, though. Well designed and well insulated, the best travel mug will keep hot drinks toasty and cool drinks ice-cold, while also staying leak-free. From classic coffee-shop cups to thermos-shaped designs, travel mugs come in all shapes and sizes. At first glance, travel mugs can seem expensive. If you’re thinking about using one on your commute, you might find it hard to justify spending what might be five to ten times as much as an Americano from your local coffee shop. However, walking out of your door already holding a coffee will save you many more pounds in the long run and you’ll avoid those annoying queues.The Ember Travel Mug²'s best design feature is the lid: It only needs a push to open, is leak-proof, and lets you sip from any side of the mug. Furthermore, the mug's design is ergonomic. It's wider at the top than the bottom and is coated with a matte finish, making it easy to grip and comfortable to hold. Insulation: Travel mugs are designed to keep your drink hot—or cold—using double insulate linings. We tested our sample mugs to see how well they maintained the temperature of our drinks over the course of a typical day.

Available in many colors, sizes and materials, the KeepCup Reusable Glass Coffee Cup is the world's first barista-standard reusable cup, fitting under coffee machines making it ideal for coffee-lovers on the go. Environmentally friendly, the one we tested is made from durable, toughened soda lime glass and BPA-free and BPS-free plastic. The cup, lid and lid plug are all recyclable at the end of the product's life.A leader in churning the market's best coffee travel mugs, Stanley has been making vacuum flasks for more than 100 years and has pretty much perfected the art of travel cups with its Stanley Classic Trigger Action Travel Mug. It's available in two sizes, 12oz/350ml and 16oz/470ml. The tightly fitting silicone lid of this hand-crafted tumbler creates a good seal, making sure that, as long as the cup is kept upright, it’s pretty spill-proof. Because it’s handmade, the colors and shapes of this 10oz/300ml cup will vary a touch but we think that simply adds to its beauty. While it’s not the lightest we tested at 12oz/340g, it’s not the heaviest either, and it does look good and is very pleasant to drink from, whether you’re traveling or sitting at your desk. The easy-as-you-like, leak-proof press release lid is designed so that you can hold the mug and open it to drink from and then swiftly close it with the same hand, great for multi-taskers or hikers. It also means that if you accidentally let go of it while you’re drinking, not a single drop of your precious brew will be lost. Made from 18/10 stainless steel, the 12oz/350ml model we tried keeps drinks hot or cold, for 5 or 8 hours — plenty long enough for a day out in town or a hike with the dogs. Most brands advise against putting milk or creamer in thermoses unless it's for a brief amount of time. Bacteria can develop when dairy products are stored at warm temperatures, especially if the travel mug isn't properly cleaned. Graham Nearn of the Stanley brand echoed this thought, telling us: "We don’t recommend putting milk or dairy products in Stanley vacuum bottles or food jars for extended periods of time, as bacteria growth can occur at certain temperatures."

Decorative cups are also not recommended for the dishwasher, as the finish will eventually wear off with the heat generated from the machine. Which travel mugs will keep coffee hot the longest?The Ember Travel Mug 2 is the coolest coffee travel mug we've tested. From its touch display to control your coffee's temperature, to its personalized in-app features that mean the mug can be made unique to you, to its included battery coaster and built-in battery life for easy charging, I was left amazed after testing this coffee travel mug. These features not only make life a little easier but I was also always excited for my next cup of morning brew. And if you're seeking a way to travel to the office or classroom with your favorite chilled beverage, our list of the best water bottles will have what you need. Are coffee travel mugs dishwasher safe?