Emily Orendorff, Barista at Intelligentsia Coffee, prefers the MiiR Camp Cup because he, as she explains, “like the cups we use in the cafe (short and wide with a great handle), making it a breeze for baristas to make your drink in it, as well as easy to clean and drink. “What I particularly like about the design of this lid is that the mouthpiece is large enough to sip the coffee without burning myself, and there is no room for milk or coffee or whatever I drink to dry out and collect. The difference between the Ember Travel Mug2 and a regular travel mug is that everything can keep a little hot for hours, but only the Ember Travel Mug2 can keep something at your perfect drinking temperature. Budget Pick: Contigo Byron: Rozette the Contigo Byron mug is not as robust or leaking as our top pick, it is a wide, easy to hold cup that works well if you use it more gently. It developed a few abrasions after our drop tests, but no more than the other cups we tried (some of them dented, chipped, and shaken much worse). We wanted to test the Thermos Stainless King mug based on its positive reviews, but the Stainless King leaked in our night tests, our bag tests, and on impact during our drop tests. Long-term test Zojirushi Travel Mug could be the only product that most Wirecutter employees own and use daily - it was a choice through many iterations of this guide, and has proven itself repeatedly. Zojirushi supports the vacuum insulation of its stainless steel cups with a five-year limited warranty, and when the lid breaks or wears off, Zojirushi sells all individual spare parts online. Battery life also varies based on a number of external factors such as: outside temperature, liquid temperature at casting, speed of liquid consumption, set temperature whether the lid is on or off, and much more. Tumblers have swallowing ports that do not seal as tightly or securely as travel cups and have wider mouths so you can add ice cubes; many also have straws for sipping cold drinks. —Matt: Hydro Flask you like to drink a lot of liquid, the Hydro Flask mug sticks a few more ounces in a mug that is still narrow enough to fit in most cup holders. With so many similar travel mugs on the market, the Good Housekeeping Institute Kitchen Appliances and Technology Lab rated the best of the best to find out which one is actually worth buying. Although other mugs, such as the Contigo Autoseal Transit and the Avex, automatically seal to prevent spills, we found them harder to use one hand as you need to hold a button down to drink. The best cups have two sealing mechanisms: the first covers the swallowing connection, and the second locks the lid to prevent it from being opened. According to a Zojirushi representative, dishwashers can damage the vacuum seal of a cup, which can adversely affect the ability of the cup to retain heat over time. But since some people prefer to drink from a wider sip port that feels more like a ceramic mug, we have included a few wide mouth mugs in our tests. If you're on the way to morning commuting, camping or just on the go, a travel mug will help keep your drink at the optimum temperature and prevent any tangling or spilling. Video: Rozette Transit also has a twisting lid that covers the swallow connector, while the similar West Loop only uses a pop tab to open the swallow connector. We were considering testing the Joeveo Temperfect mug, which supposedly uses a special insulating material to capture excess heat energy and then release it over time to keep your drink at an optimal drinking temperature. I also asked several Wirecutter employees to measure the height of their Keurigs to get an idea of whether cups would fit under a coffee machine with only one serving. Both engineers, with whom we talked, found that most of the heat loss occurs through the lid, and that cups with wider lids tend to lose heat faster. The West loop did not hold as well in our drop tests as the transit, and we found its vertical push button harder to operate than the one on transit. Ryan Fisher, Director of Operations and Roaster at GoodBoybo.