Haba Kullerbu Colorful Curves - Build & Grow Ball Track Set

A Ball Track that Grows with Children

Designed to grow as your child grows, this 39-piece Kullerbü set features looping curves, speedy ramps, and rolling balls all ready to spark endless exploration and fun. Perfect for ages 2 and up, this STEM-focused building toy helps children develop fine motor skills, spatial awareness, and problem-solving abilities with every build.

Thanks to the secure click-together system, kids can enjoy frustration-free assembly. Whether it’s racing marbles or triggering a domino chain reaction, this set delivers screen-free, open-ended play that evolves with your child’s developmental stages and it’s compatible with all Kullerbü track systems. 

Age: 12 Months & Up

• STEM Play that Grows with Kids: Develops coordination, logic, and early engineering skills. 
  
• Montessori-Style Learning: Encourages independent building and hands-on problem solving. 
  
• Endless Reconfigurations: Includes 39 track pieces, ramps, dominoes, and rolling balls.
  
• Expandable Fun: Fully compatible with all other HABA Kullerbü marble runs and track sets.
  
• Crafted to Last: Made from child-safe, high-quality materials for lasting, safe play.