Track Size Trolley designed for children ages 2 years to 6 years. Fits standard wooden tracks and within the road of floor play mats. Take a ride in Mister Rogers' Neighborhood - ideal play with wood building blocks. Take the trolley to school for show and tell promoting community, neighborhood and kindness to one another---this is what Mister Rogers' stood for. Measures: 3" long x 1-1/4" wide x 2" high.