Knock-Knock! Who's there? Bring a smile to your children's faces with when you add a pre-printed joke from the 101 Lunchbox Notes with Knock-Knock Jokes for Kids with your child's lunch to lighten her mood and brighten his day. • Red cardboard covers • 101 lunchbox notes for kids • Pre-printed notes • 101 full-color tear-off sheets • Blank space on back for your own message • Sheet size: 4.4” x 4.0" (112 x 102 mm) • Notepad size: 44" x 4" x 0.5" (112 x 102 x 12mm) • Packaged in a self-seal bag with a hanging tab