Milo (plush) is a postal delivery dog and comes in a durable mailbox with working flag, door and mail slot. This 25-piece play set includes a welcome letter with a unique redemption code (registration can be online or via the included fold-over post card). Once registered, your child will receive 4 letters from Milo (one per week). The letters are filled with great content about Milo, his friends and his travels. Great motivation for kids to learn to read and even write back to Milo.