Device 'm using daily –I bought this in Austin at YETI’s flagship store, and it travels with me everywhere. For the last few months, I’ve used it every morning to keep my tea hot (typically chaga or pu-erh tea, plus unsweetened Laird Superfood Creamer) and every afternoon to keep my iced tea cool. I don’t have to worry about condensation or water puddles on my table, and in my experience, it keeps things hot or cold for HOURS. The MagSlider™ magnetic closing mechanism is a much bigger deal than you’ll realize initially, especially for cleaning. They are available with custom designs, and mine features a Texas rattlesnake. Here’s the official description: “Any tumbler that’s coming along for the ride needs to be tough enough to keep up. Our Rambler® 20 oz. is made from durable stainless steel with double-wall vacuum insulation to protect your hot or cold beverage at all costs. Like the entire Rambler Family, the 20 oz. Tumbler and its lid are dishwasher safe for easy cleaning…. Available in Stainless, Duracoat™ colors and Seasonal finishes. Layered with an advanced, oleophobic coating (which is science for: it’s fingerprint-proof), tested to the highest level of UV resistance, and equally as dishwasher safe, durable, and insulated as its predecessors.”