Purchased from an authorized retailer 5-6 years ago. 【Defective】I spilled a drink on it when it was new and washed it. Although it's not stained in the same place as before, there is some discoloration on the bottom, as shown in photo 8. (Cause unknown) It's on the bottom, so it's not very noticeable unless you look closely. Please purchase only if you understand that it has been stored for a long time and is defective. It will be shipped folded and placed in a mailbox.