This is a tumbler. It will be delivered in the packaging shown in the fourth photo. It is new and unused. This is an official tumbler from the Karolinska Institute in Sweden. It was purchased around 2019. The bottom of the tumbler sticks to surfaces, and it can be easily removed by pulling straight up. (It's designed to be difficult to tip over.) To prevent any issues, it will be sent via anonymous shipping. ⚪︎ Immediate purchase without comments is welcome!