This is a popular stainless steel tumbler from Montbell. It has been used a few times indoors and has some minor scratches, but there are no issues with use. Retail price: 2,750 yen Perfect for camping and mountain climbing. [The following is official product information from Montbell] This tumbler achieves outstanding heat retention and cold insulation thanks to its highly insulating double-wall vacuum construction and reflective processing that minimizes heat transfer. It uses durable and corrosion-resistant stainless steel. The shape fits in a car's drink holder. * Because this product has high heat retention, when drinking hot beverages, do not tilt the body suddenly; drink slowly. * May not be compatible with some car models. Specifications [Material] Body: SUS304 stainless steel (vacuum double-wall construction) Lid: Polypropylene + thermoplastic elastomer [Weight] 250g [Colors] Navy (NV), Red (RD), Stainless Steel (STNLS), White (WT) [Size] Φ6.5 x 15.3cm (mouth) [Capacity] 400mL [Heat resistance/Cold resistance temperature] Lid: 100/-20℃ [Kitchen appliance compatibility] Dishwasher: Not usable, Microwave: Not usable