All Hot Wheels track sets can be expanded with a Track Creator Straight Track Set. Includes approximately 1 meter of straight track quick-connect system, two approximately 30 cm long molded pieces, one approximately 30 cm long FlexTrack, and two adapters for connecting to other Hot Wheels E-Tracks. Children ages 4 and up can improve their problem-solving skills and fine motor skills with Hot Wheels track sets. Cars, tracks, and sets sold separately. Colors and decorations may vary.