Neihepal 12oz Stainless Steel Wine Tumbler with Lid and Straw, Double Wall Vacuum Insulated Travel Cup, (Rose Gold,8 Set)

This cup is my favorite by far! Just looks alone, this cup is beautiful. I love the iridescent shimmer it has. It's stunning! Cup wise, I was most curious about this test, because Cold Brew is most likely what I'll end up using these cups for. I filled the cup about halfway with ice and then poured cold brew coffee over it. I had every intention of seeing how long I could leave it sitting... but I tested it in the morning when I needed my coffee, and well, I'm sure you can guess! I managed to hold out for a little over two hours, and there was no noticeable change in the temperature and my ice hadn't melted. Since the first cup did so well, I actually used the same ice to refill it with more cold brew. I drank about half of that refill over the next 30 minutes and everything was still just as cold. So altogether, the ice and cup went through more than one serving of cold brew without a problem. I'm really impressed with how well it handles iced drinks. After testing these tumblers with hot coffee, refrigerated sweet tea, and iced coffee, the iced coffee test was definitely my favorite. This is probably going to become my regular iced coffee cup! Excellent quality all around. And the size is great for anyone that is tired of dragging their 40 ounce cups around everywhere, give those arms a bit of a break for a bit!