Using your Sanrio Hapidanbu plush keychain is super easy! Just attach it to your keys or bag, and you're all set to show off your cute accessory. When it comes to maintenance, keep it away from sharp objects to avoid any tears. If it gets dirty, you can gently spot - clean it with a mild detergent and a soft cloth. Remember, each blind box contains a random keychain, so don't be disappointed if you get a duplicate. And since the design inside is a mystery, once you open the box, we can't take it back for a return or exchange. Enjoy collecting these lovely keychains!