Perfect for writing little secret messages to kiddos, our Official North Pole Mail packs come with 24 x double sided cards and scratch and reveal stickers. - 4.5" x 3" Flat Card - Designed and Made in Canada - Packaged in a clear box HOW TO USE: 1. Hand write a message on the back of a card. 2. Cover the message with one of the scratch stickers provided. 3. Recipient will scratch the sticker off to reveal the message!