Wonderworld Creative Gravity Play! Trix Tracks Up Stairs Track - 57 Piece Set Unique Kids Toy with Endless Building Options Includes stair climber Promotes intellect and skills Promotes spatial perception, creativity and concentration Encourages imagination and originality Eco-Friendly: Made in Thailand from sustainable rubberwood and strictly using Non-Toxic Paints, Dyes and Lacquers and Formaldehyde Free Glue