This bottle can be used in 3 ways: as a stainless steel bottle, a PET bottle holder, and a 500ml can cooler. It seems to be a gift from Hotel Nikko Alivila in Okinawa. I received it, but I'm selling it because I don't use it. It's new and unused. I opened it for the photos, but I haven't used it. Although it's new, there may be initial scratches. Please understand. I think it's easy to use! Color: Navy Capacity: 580ml Multi Stainless Bottle 3WAY USE BOTTLE Double-walled vacuum construction PET bottle holder Can cooler Hotel Nikko Alivila Okinawa