Deluxe thermos mug with ceramic interior coating for the ultimate gourmet drinking experience (neutral, unadulterated flavor) with a capacity of 300 ml (0.3 L). Superior insulation thanks to a double-walled vacuum design with copper insulation (keeps drinks hot for up to 6 hours and cold for up to 12 hours), easy to clean without leaving residue, maximum durability thanks to an exterior powder coating, spill-proof design, Craft Paper Box.