With the GraviTrax Junior Starter Set Extension Frozen, children aged 3 and over can immerse themselves in the world of the Ice Queen GraviTrax Junior is an interactive marble run system for children aged 3 and over. With the GraviTrax Junior Extension Frozen, boys and girls can transform their marble run into their own Frozen world. With the play figures Anna, Elsa, Olaf, Sven and other decorative elements such as the ice palace, the world of the Ice Queen can be experienced up close. Playing with the (animal) figures and decorating the themed worlds encourages creative role play and imagination. Building and playing fun are combined. The GraviTrax Junior Extension Disney Frozen can be extended with further extension sets, starter sets or with Elements. All GraviTrax Junior sets can be combined with each other and are mainly made from renewable raw materials. GraviTrax Junior focuses on age-appropriate learning content. Motor skills and spatial thinking are encouraged through the free design of the marble runs. By exploring the rolling behaviour of the balls, the principle of cause and effect is experienced at first hand.