The Hot Wheels Wall Track Booster Set - Air Madness is a racetrack that launches cars up a ramp that rest against a the wall. The cars go through amazing feats of gravity defying thrills. The set is safe for walls because the poster and track adhere with Command Strips from 3M. The track comes with 1 car but it will accomodate several cars on the track at one time. This is the perfect racetrack for a young Hot Wheels collector. The set comes with a racetrack that measures 20 x 2.75 x 12 inches, a background poster, a 3M wall mount system and a car. It is recommended for ages 4-12.