So far, I have no complaints. I've only been using it for about a day, but it does everything I expected it to. I started last night by filling it with ice, tightening the lid, and closing the lid slider. There's still ice is there 20 hours later and I'm sure it'll last longer. Now, of course, this is without actually using the cup - I just let it sit on the counter. And it's also sitting inside where it's a comfortable 70 degrees, but I'd still say that's impressive. Built quality is fantastic. If anything, my only complaint is that it's a little heavy because it's built so well - but this same complaint can be said about any similar tumblers (YETI, RTIC, Ozark, etc.) I bought the OD Green, and I definitely like the coloring/design of this cup more than the plain brushed metal style of those other cups. But that's obviously personal preference. I haven't had the chance to test it with hot liquids yet, but I have no reason to believe it wouldn't perform just as well as expected. I'd definitely recommend this if you're looking for a insulated tumbler but don't want to spend the money on the YETI. I also would recommend it because of the twist on lid - it's a much more secure connection that the YETI, RTIC, or Ozark style lids. Also, there is a version of this lid with a ''snap'' closure rather than the ''slide'' closure. I preferred the slide, but there are videos on YouTube showing that the snap lid will not leak at all, even when flipped upside down. Definitely worth considering both to see what's best for you.