Hello Kitty Sanrio This is a plastic water bottle. You can keep it cold by freezing the included cooling stick and putting it inside. ⭐️Instant purchase OK⭐️ ⭐️First come, first served⭐️ ⭐️Anonymous delivery⭐️ It will be shipped via Yu-packet Plus. I will sell it to those who understand that it has been stored at home. Please refrain from purchasing if you are concerned. Thank you very much (⋆ᴗ͈ˬᴗ͈)” Capacity: 380ml (480ml without the cooling stick)