This adorable bag and letter set comes with 22 preprinted plastic 4" x 6" envelopes, intended for preschool, daycare, and classroom use. The mailbox is recommended for children from ages 2 to 8 and is constructed with a realistic front mail slot to teach kids how to mail and send letters on their own! For added convenience, plastic mail is easy to clean and virtually unbreakable. The toy US Mail Bag is constructed from coated nylon for added durability, and a break-away shoulder strap is included. Kids in a classroom will enjoy hours of fun with this realistic toy mailbox that includes an authentic US mail logo on the front.