This is a limited edition Starbucks "Sakura Sunny Bottle" released in 2015. It's a plastic bottle that can be disassembled into two parts. It doesn't have heat retention. But, it's a very cute tumbler for pink lovers & Starbucks fans. How about using it as a companion for work or study? Please be healed ✨✨ It's a new, unused item, though it has been stored at home.