This unique mug has double steel walls, an internal ceramic coating, and excellent aesthetics. The mug is made of stainless steel and plastic. Cold coffee is a thing of the past - the double walls ensure that your prepared brew stays hot for a long time. The interior of the mug is coated with ceramic. You can enjoy the delicious taste of freshly brewed coffee for an extended period without any metallic odor. Additionally, thanks to the ceramic coating, the interior does not stain easily and does not absorb the smell of the brew. The lid is made of plastic and helps retain temperature longer, but it does not fully protect the drink from spilling. The closure may not be entirely leak-proof, for example, if tossed into a bag - the brand aimed to create a product that replaces a daily-use mug, allowing you to enjoy hot coffee or tea for longer. The mug is compatible with Hario V60 drippers - you can brew coffee directly into it. The mug is not suitable for use in microwaves and dishwashers.