Went 3/4 of the way to a good product but fell short
For the price: not good, you can get reliable, truly full steel insulated bottles from Stanley at a lower cost (just no choice in color). Yes it keeps things cold for a while, but being that the entirety of the cap is plastic, this product has a very short life unless you ABSOLUTELY baby it. If you use the cap retainer to carry it (as I'm guessing many people will), you will eventually chip away the plastic nub on the top, and also punch it's rod through, breaking the seal on the silicone on the underside of the cap, making it leak and hold temperature for less time. All in all, for a company that went through the trouble of "triple" insulating (actually only double, as the stainless steel inside does not count as an insulator, only a container, thus leaving only the copper layer and the vacuum layer) the body of this product, they could have spent just a little more time recycling unused steel to make a cap that doesn't fall apart and render the product a leaky, unreliable mess.
Functionality: works well I suppose, though that filter tray is garbage for loose tea leaves (tolerances are not tight enough to keep leaves from just going around the filter) so it's really only good for keeping ice or teabags held down in the body away from the nozzle. The bottom of the bottle also dents EXTREMELY easily (it's a thin aluminum cap on the bottom), making it hard to maintain a flat bottom and not have it tip over to make more dents.
Overall, it's like a Mac: you're better off spending your money on something that isn't just a designer product, so you can get the functionality and reliability you NEED.
Would not recommend to a friend.