Bought this one as a gift but we have several already and they've been working great for years. I'm still impressed with how well and how long they keep water cool for.

If you ever get chapped lips don't bother. Putting the threads on the outside of the cap was one of the choices of all time. Thankfully I have one of the older ones. They weren't hard to clean.

Solid waterbottle doesn't leak, keeps drinks cold for a while. Above average but not insane.

keeps water cold for an unreal amount of time

If you're looking for a high quality insulated water bottle with a large capacity, great lid (snaps in place when drinking, and the momentum generated from the amount of force needed to unsnap it always perfectly closes it! This is incredibly satisfying and I find myself using it as a fidget as a result), clearly well thought out. I haven't found myself appreciating the design as much as I expected, but it is so subtle and inoffensive that even my non-techy girlfriend uses it as her daily carry! Great product, deserves the hype!