The tea canister is made of plastic. It's a rare octagonal shape, so I think it's less likely to get damp. How about it for someone who lives by the sea? It's a used item, and although it's not very noticeable, there is a feeling of use and fine scratches on the entire front side, so please be aware of this. The inside is in a clean condition. It has an elegant chrysanthemum flower pattern. I was asked by a friend to list it. #WinterSale The teacups are almost unused, and have been stored for a long time. The outer diameter is about 6 cm and the height is about 7 cm, so they are small, and could also be used as sake cups or Japanese-style dessert cups. I will clean them at home and ship them.