Any bottle that’s nice to look at, comfortable to drink out of, and keeps our water cold is great in our books. We tested this bottle in a temperature-controlled room set at 68°F (20°C) to see how long it could keep water cold.

Chilly’s Series 2 Water Bottle Review | Pack Hacker Chilly’s Series 2 Water Bottle Review | Pack Hacker

The bottle held up well over our testing, though it did take a hit when we accidentally knocked it over in an uneven cement parking lot. 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. To assemble, snap the carry handle into the designated cap spots, screw the antimicrobial collar onto the bottle, and top it off with the cap.The collar follows the curve of the top of the bottle, taking it from a wide mouth to a smaller spout. Chilly’s addresses this by adding a silicone base so that the stainless steel never makes contact with whatever surface you’re putting it on. Overall, we think these are minor issues that are manageable considering how comfortable the bottle is to drink from and the customization options available. 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. This hasn’t caused any issues so far in our testing, but we wouldn’t be surprised to see it come off entirely at some point down the line, which can pose an issue if you’re on the road.

We can’t vouch for whether it affects the antimicrobial performance, though it doesn’t impact the cap’s seal. This means that there’s less clearance between your fingers and the top of the cap, and we found that sometimes our fingers would bump against it. It was still comfortable to carry once we adjusted, but it’s something worth noting if you prefer extra space or have larger fingers. While stainless steel bottles are reliable for insulation, they can be pretty loud when you set them down.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. Its antimicrobial collar does have a small few gouges on it, almost like the plastic got caught on something and scraped off. We noticed that the collar and loop are a slightly different shade compared to the bottle, though it’s not surprising as they’re different materials. If you overtighten, the cap attaches to the antimicrobial collar too well and comes off with it the next time you unscrew it for a drink. 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.