This is an unusual item. It's an unusually shaped titanium mug with a lid and spout. Its not very big. It has a coating on the sides and there is a slip included inside when you get it warning on how to use heat with the item. I would not recommend this for robust flame heating. I do like the item though due to the material its made of and its shape. Previous reviews state its flimsy thin metal but its no worse than other titanium items I own from other companies. I do not necessarily recommend this due to the high cost and what I perceive to be its limited use primarily as a mug. I do like it though and if the cost and other reviews aren't a deal breaker it does have a nice vibe of its own. It feels good in the hand and holds just the right capacity for a nice full mug of coffee or tea or whatever is preferred.