Advent calendar full of uncertainty and give someone sense of excitement compared with ordinary toys. Children would look forward to the gifts behind the calendar and the upcoming of . calendars gifts for kids contains 24 different cars, including police cars, fire trucks, sports cars, ambulances, taxis, etc. More surprises behind the calendar door. vehicle advent calendar made of durable, tear-resistant material and coated with non-toxic paint. Perfect size for children's hands, easy-grasp, no sharp edges. Friction powered (NO Batteries Required) for a fun and handy toy set for kids. With a good push and automatic rotating function, mini toy car vehicle set can easily run for a long distance. Children open the calendar blind box corresponding to date every day, when gain all 24 pull-back cars, is coming.