What information do you have to put on a package that you send to someone?

Do you have to put any information at all? I am going to send a package to my friend that lives in kansas and I live in chicago. Thank you very muchWhat information do you have to put on a package that you send to someone?you need to put their name and address and you need to put your address for a return address

so they know where to send it back to, if for some reason it isn't deliverable.