Neihepal 12oz Stainless Steel Wine Tumbler with Lid and Straw, Double Wall Vacuum Insulated Travel Cup, (Dark Night,4 Set)

I tested this Rose Gold tumbler with a fresh cup of coffee straight from my Keurig. Since it was extremely hot, I left the lid off for about 10 minutes before putting it on. Even after that, my coffee stayed scalding hot for close to an hour! Around the one-hour mark it had cooled enough that I could comfortably drink it, and it took roughly another hour to completely cool down. For such a small cup, I think keeping my coffee hot for around two hours is pretty impressive. I also really like the 12 oz. size. I'm not a huge coffee drinker and normally end up wasting quite a bit when I use my larger cups. I still had about half left when this finally cooled, but I was finished drinking coffee anyway. This size gives me enough without making way more than I'll actually drink. The rose gold is really pretty too!

I decided to test this tumbler with sweet tea straight from a gallon jug in my refrigerator, without adding any ice. I specifically wanted to see how well the insulation would maintain the temperature of an already-cold drink on its own. I was pleasantly surprised! I didn't notice any real change in the temperature for almost four hours. By that point, I only had around a quarter of the tea left, so it had already done its job for much longer than I actually needed it to. That's really good performance considering this is only a 12 oz tumbler. I also love the green/purple finish on this one. It's a cute little cup and a great size when you don't want to carry around a huge tumbler all day. Great quality!