It was the ecoffee cup from blue bottle. Looks like it is made from bamboo, may be worth reading out to them. https://bluebottlecoffee.com/store/blue-bottle-x-

It was the ecoffee cup from blue bottle. Looks like it is made from bamboo, may be worth reading out to them. https://bluebottlecoffee.com/store/blue-bottle-x-ecoffee-cup https://bluebottlecoffee.com/store/blue-bottle-x-ecoffee-cup