This is the rolling tumbler piloted by a child ensconced inside its protective inflatable honeycomb structure. Made from heavy-duty 1/8"-thick PVC, 30 hexagonal chambers form the tumbler's globular shape; each end provides a 13 3/4" diameter opening that allows entry for a child up to 80 lbs. With ample room in the interior for changing position, a child's shifting body weight is the only requirement to generate momentum-Newtonian physics provides the physical comedy. Ten transparent chambers enable pilots to avoid obstacles, ensuring a proper heading when aiming for rivals. Inflates by mouth or with pump (recommended, electric air pump sold separately). Ages 3 and up. 47" diameter. (7 lbs.)