Advent calendars are full of uncertainty and give a sense of excitement compared to ordinary toys. Children will look forward to the gifts on the back of the calendar in anticipation of Christmas. The children's advent calendar gift contains 24 different cars including a police car, fire engine, sports car, ambulance, taxi and more. There are more surprises behind the calendar door. The Christmas Vehicle Advent Calendar is made of durable, tear-resistant material with non-toxic paint. Sized to fit in a child's hand for easy gripping with no sharp edges. Friction driven (no batteries required), a fun and convenient set of toys for children. The mini toy car has good propulsion and auto-rotating function, can easily run a long distance. Children open the blind advent calendar box corresponding to the date each day and Christmas comes when all 24 boomerang cars are obtained.