This tea thermos with infuser is constructed from a double-walled vacuum insulated stainless steel that keeps very hot liquids very hot for approximately 12 hours and chilly liquids cold for nearly 32 hrs. To open the lid, just turn the nozzle counter-clockwise revealing the “open up” label to the lid. https://scenic-travel-prints90009.blogdon.net/not-known-factual-statements-about-famous-monuments-wall-art-48465057