Muji Insulated/Cooling Lightweight Mug 0.35L Unused, only opened. This was kept at home as a spare. The design is different from the current model. Since it's compatible with Thermos vacuum flasks, I'll include a spare, unused lid unit that I kept with it. They're different colors, so you can switch them out depending on your mood. Details below: Product Name: Vacuum Insulated Portable Mug Capacity: 0.35L Heat Retention: 61 degrees Celsius or higher (6 hours) Cold Retention: 11 degrees Celsius or lower (6 hours) Materials: Body: Stainless steel (acrylic resin coating) Lid/Lid Body: Polypropylene Packing: Silicone rubber New Price: 3,000 yen That's all. Thank you for your consideration.