The wooden slopes for Quadrilla marbles are pure fun. The first part of the fun is the construction of the slopes, which thanks to the intuitable interlocking system allow even the little ones to build them independently. The second part of the fun is the proof with marbles, provided in large numbers in the sets, to test the newly made constructions! Of the highest quality, made of birch wood and rubber tree, the Quadrilla marble tracks will accompany your child in the growth and in many hours of fun!