No batteries, gears or pedals: children ages 2 and up simply turn the wheel side to side and this wiggle car rolls forward on its own momentum. PU wheels light up as they spin and run quieter than hard plastic, so indoor use does not echo through the house. A 15 degree dip angle in the frame resists tipping backward when a rider leans, and the seamless body has no joins to pinch fingers. The seat measures 12 in across, wide enough to stay comfortable for years, and the frame carries up to 110 lb