This LEGO Super Mario set features two Mario Kart toys for interactive racing and balloon-battling gameplay. The set includes Baby Mario and Baby Luigi figures, along with six buildable balloons (three red, three green). Players can place Baby Mario in his Biddybuggy and Baby Luigi on his Tri-Speeder, then launch shells to knock down the balloons. When paired with LEGO Mario, Luigi, or Peach figures (sold separately), the vehicles trigger sound and visual effects for actions like honking and drifting. The Biddybuggy measures over 2 inches (5 cm) high, 3 inches (7 cm) wide, and 4 inches (10 cm) long. Designed for ages 8 and up, this set offers a mix of racing and competitive play elements.