The new Harry Potter book is big in more ways than one in Britain.
It's thought to weigh just over two pounds, and it's too big to fit through the mail slots in most doors.
An estimated 500 thousand copies of the fifth book in J.K. Rowling's series about the boy wizard are supposed to reach mail boxes and front doors around the country next Saturday.
So the Royal Mail is working a little magic of its own to deliver "Harry Potter and the Order of the Phoenix."
Vans will be used to help make deliveries, because mail deliverers can't carry more than 35 pounds on rounds.
A Royal Mail spokeswoman also says people expecting a book should try to be home when it arrives, since it's too big for mail slots.