This mug is ideal for coffee and other cool (not literally) drinks. This mug is very durable when used in the right way. As you see on my Stl file's name, this mug is my 5th version, so it should be pretty flawless. But, as always, if you have problems, please let me know in the comments and I will be happy to fix them:)
For best results, print with multi layering on the sides to prevent any potential leaks. Use 75% line infill if possible.