This is a Chikawa stainless steel tumbler, exclusive to 7-Eleven. It has a mouth diameter that can fit a coffee cup directly inside, and a large 550ml capacity. Made of stainless steel, it keeps the temperature of hot and cold drinks for a long time. You can use it at home, in the office, or when you're out and about. 【Product Details】 Size: Height 15cm x Outer diameter of drinking mouth 8.6cm Capacity: 550ml Material: Body/Stainless steel Country of manufacture: China It has never been opened. There are a few scratches on the case. Although it is new and unused, it has been in someone's possession, so please refrain from purchasing if you are sensitive to this. I haven't written much, but I would appreciate it if you would take a look at my profile.