The GraviTrax Junior Starter Set L Jungle includes everything you need to start building right away and immerse yourself in the jungle world; thanks to the wide range of jungle elements and animal figures included in the set, children from the age of 3 can experience the world of the jungle up close and personal when decorating and playing. GraviTrax Junior is an interactive marble run system for boys and girls from 3 years: With GraviTrax Junior, children don't just build simple marble tracks. By decorating individually with lovingly designed elements, children create their own themed worlds. GraviTrax Junior focuses on age-appropriate learning content. Motor skills and spatial thinking are encouraged through the free design of the ball tracks. By exploring the rolling behavior of the balls, the principle of cause and effect is experienced at first hand. Playing with the (animal) figures and decorating the themed worlds encourage children's creative role play and imagination.