Thank you for viewing. This is a Mindfree vacuum-insulated double-walled stainless steel mini bottle, 350ml. The color is navy. I received this through a house builder's campaign, but I'm selling it because I already have a similar product. I can't offer a significant discount, but I might be able to offer a small one, so please comment if you're interested. Instant purchase is OK! Purchases late at night or early in the morning are also OK. Feel free to purchase at any time. It will be shipped via anonymous delivery using Rakuraku Mercari.