However, don’t expect spectacular results – it is, after all, a lot cheaper than Yeti’s offering. But can its performance match that of the much more expensive Rambler bottle? The model is just as functional and practical as its costly rival and is very good at keeping the cold water cold and hot tea hot. Obviously, the best thing about bottles made by Yeti is their superior thermoregulatory capabilities, and this model is no exception. The dual-vacuum technology and the 18/8 stainless steel construction of this bottle work together to keep the cold beverages cold and the hot beverages hot. The model is particularly good at maintaining the temperatures of cold drinks, just as I expected. We are committed to finding, researching, and recommending the best products. We earn commissions from purchases you make using the retail links in our product reviews. You can see in the image below that the thermos on the left has the hotter water, however the heat signature on both Tumblers is only present inside the Tumbler. Whether you are going on a field adventure or driving to work, a favorite drink in the morning is indispensable. But the problem I have always encountered is that in the hot summer, the ice cubes in the cold drink quickly dissolve while in the cold winter, the hot coffee quickly cools off. This leads to a short time to enjoy the drink or have no way but endure an unfavorable experience. We keep a small quantity of other colors/bottles on hand, and can source other colors/sizes for you upon request. They both work very well at keeping hot drinks hot and cold drinks cold. Experience unparalleled temperature retention, keeping beverages ice-cold for up to 12 hours or piping hot for up to 6, thanks to our cutting-edge vacuum insulation technology. Coupled with a health-conscious PP plastic lid that ensures a 100% airtight seal with its quarter-turn technology, spills and leaks are things of the past. Whether it’s for Grandpa, Grandma, Mom, Dad, your sister, or your bestie, this tumbler encapsulates joy, love, and sweet affection, making every sip a reminder of your gratitude and warm wishes. You will be happy to know that unlike stainless steel water bottles of the past, these insulated tumblers won’t freeze your hands when you have cold drinks or burn them with your hot beverages.