Messaging app LINE has launched a new collection of BT21 stickers in collaboration with the International Vaccine Institute (IVI), a non-profit intergovernmental organization in South Korea.

Named BT21: Protect You by LINE x IVI, the collection consists of 24 stickers designed to lift users’ spirits and encourage them to stay healthy. It is available for purchase until Oct. 31 and is priced at 100 LINE Coins (Rp 23,000 or US$ 1.99).