All around a great water bottle! I love the colors (I ordered the Obsidian one). The lip of the water bottle is super smooth. I don't know why I expected differently, but it's great. The size and shape is very efficient as well. I use mine almost exclusively for work, so I just toss it in my backpack and because it's shaped similar to a plastic water bottle, it fits efficiently for how I use it.

If there was a negative, opening and closing the bottle isn't effortless. The o-ring is substantial and you'll never get a leak, but that also means it may require more force to open and close it. Also, opening and closing it is a little awkward, in that the cap is narrow and awkward to grip.

At the end of the day, it's a water bottle and does that job quite well! I would recommend this product!

CAUTION....I do not recommend the trail series as they are incredibly flimsy/delicate compared to the other main Hydro Flasks. The first time I used this I filled it to the brim with water and put it in my snowboarding bag and went on my way. Never dropped or banged and throughout the day when I went to take a sip of water, I gently squeezed the bottle and it dented. I am telling you I am no hulk and it blew me away how delicate this bottle was. Like a simple squeeze and it dents? I did not drop it to cause this but merely squeezed it while drinking water. I called about a warranty but I was told dents are not covered. Lesson learned to not worry about a few ounce weight and stick to the regular Hydro Flasks. This lightweight series it too delicate and almost like junk just to save a few ounces.

I bought two of these to take on our three week trip to Thailand. As it is very hot and humid, it is very important to keep hydrated. Bottled water is very cheap but gets warm almost immediately. I chose these as they are lighter than the ones I currently have and you don't want to be carrying any more than necessary. As we don't leave until tomorrow I can't say how well they keep water cold but I'm confident that they will work beautifully. The size is perfect. They hold enough but not so much as to make them a burden to carry and as ivsaid, there is water to refill everywhere, paid of course. You can't drink the tap water.

An almost perfect water bottle. This water bottle insulates very well and is so much lighter than other insulated bottles I have used. It's not as light as a plastic bottle, but noticeably lighter than other steel bottles I have. Slimmer, too. I only wish that it was designed in a way that the lip of the spout was not exposed when the cap is screwed on. Would make much more sense if it was covered by the cap so that even if the outside of the bottle gets dirty, the part where you drink from is protected. But overall, I am very happy with this purchase.