To put these market-leading travel mugs to the test, our GHI experts aimed to simulate different aspects of everyday usage in the lab. They tested leakproof claims by filling each mug to its maximum level, before tipping it on its side for 20 minutes. For accuracy, they weighed the mug before and after to measure any weight loss from spillage.

It’s worth noting that there’s no option to close off the opening on this cup, so if it toppled on its side it would obviously spill out through the sipping hole. Consider how long the mug claims to keep drinks warm or cool for, too, so that you don’t arrive at your destination with a lukewarm beverage. At the time of writing, there are ten colorways, all with a sleek matte finish. You can choose a separate color for each part—except for the cap, which is always stainless steel. Whether you want to rep your favorite sports team or create an aesthetically pleasing combination of colors, the world is your oyster. Well, at least three parts of the water bottle world. Choosing a good travel mug involves finding an ergonomic design that is comfortable to carry while you’re out and about.The Series 2 is an upgraded version of Chilly’s Original Water Bottle and has a few new features that set it apart from the first iteration, which we’ll get into below. At the time of writing, the Series 2 doesn’t have any patterns like the Original does, limiting Chilly’s personalization options. They make up for this by adding customization in other ways—read on to find out how. Materials & Aesthetic However, when they say not to overtighten the collar or cap, they mean it. This could be because overtightening may strip the screw top, but we think it has more to do with how the collar and cap interact. Chilly’s Series 2 Water Bottle | The collar sometimes comes along for the ride.

Some coffee shops will reward you with discounts for bringing your own cup, and at most chains, there are no size restrictions, making it even easier to do good and get your daily caffeine fix. That’s a lot of numbers to look at, we know. Essentially, our test shows that the Original Chilly’s Bottle kept water 2.6°F (1.6°C) colder than the Series 2 on average. However, the Series 2 has updated features like the antimicrobial collar, carry handle, and silicone bottom, potentially making this slight temperature difference a non-issue depending on your preferences. Chilly’s Series 2 Water Bottle | This water bottle is not friends with cement.Like any water bottle you get, there’s a handful of things they request you avoid doing, such as putting it in the microwave or freezer. Chilly’s instructions also say to avoid leaving in “any organic products such as milk or orange juice that can spoil in the bottle overnight,” which is a pretty specific call-out that may not apply to everyone. Chilly’s bottles are hand wash only, which is likely another reason why the silicone base has stayed on for so long with minimal glue left. While you can buy replacement lids and collars if you want to switch up the color options, there’s no replacement base, so keep that in mind if it comes off while you’re traveling. Chilly’s opted for minimal branding, with a subtle engraved logo toward the base of the bottle. You can also pay extra to add your own eight character engraving, which takes the place of the logo. Gone are the days where someone can deny that they’re drinking out of your bottle. Chilly’s Series 2 Water Bottle | Replace this logo with an engraving of your name.

The collar follows the curve of the top of the bottle, taking it from a wide mouth to a smaller spout. This narrower opening and soft plastic of the collar make for a super comfortable drinking position. And unlike other steel rims, it isn’t as affected by temperature. Though it’s not dishwasher safe, all you need to do is separate the cap and collar from the bottle and get in there with some warm water and soap (or baking soda if you need to be more thorough). The handle doesn’t have rivets and only snaps into place, but it doesn’t detach from the cap. Chilly’s doesn’t recommend trying to do so because it could cause permanent damage. Separately, they tested for comfort, design, and ease of use. If a mug claimed to be dishwasher safe, they ran it through multiple cycles and noted any changes in quality. Overall, we think these are minor issues that are manageable considering how comfortable the bottle is to drink from and the customization options available. But because looks aren’t everything, let’s take a look at how this water bottle performed. Features & UsageThe OG chilly’s cup has a really straightforward design. Consisting of a slim tapered tumbler cup and simple push on lid. The rim of the lid has a slight lip making sipping easy and comfortable. It also keeps unwanted dribbles minimal – because that’s never a desirable look!