This is a travel version of the Espro French Press. This 12 oz. version can also be used for loose leaf tea on the go. The leaves get pressed to the bottom and sealed off to stop extraction.
It has a double lid with silicone seals to prevent leaks. It is a stainless steel, vacuum insulated double-walled container that keeps heat in and cold out. If you are having cold brewed coffee, it keeps the cold in and the heat out!