Perfect for early Christmas cards, these colorful 5x7 cards feature Advent windows on the front. A window is opened on each of the 24 days of Advent to reveal a special holiday picture. The recipient can also choose to visit the web and follow the Twas the Night Before Christmas poem. The inside is blank for your personal message. A festive red envelope is included with each card. A set of 36 assorted greeting card Advent calendars with whimsical Christmas themes.