Grab the coffee and go on an adventure! This is an easy-to-carry, leak-proof, safe-to-drink, and thermally insulated coffee maker that can be used to grind loose coffee or tea. Cold brew coffee maker, hot tea brewer, and even an espresso brewer. Effortless anytime, anywhere! This small travel mug can easily fit into most backpacks. It's super lightweight 240g. Very strong too! The main body of the tumbler is durable and equipped with a non-slip sleeve to bring you more safety and comfort. It can hold 20-25 grams of coffee/tea and 10-11 ounces of espresso to make you a cup of espresso. When in use, there is a vacuum seal to help trap the heat. But when it's hot, the best brewing time is 3-4 minutes. Travel mugs and teapots?! Keep bulky coffee machines, tea makers, and giant beer glasses at bay. Even if there is no tea or coffee cup, you can enjoy your favorite brew directly from the glass. Simple, just a great cup of coffee, hot water, and your own French coffee press, easy to carry.