Amazon.com description: Product Description: GoldieBlox: Construction toy featuring the world's first girl engineer character, Goldie Blox! While many dolls are about dress up and fashion, Goldie is about action. Use the construction set to build a 13' zipline and send her soaring across the living room over and over again! Introduces the real-life STEM concept of suspension. Designed for tinkering and creative exploration, GoldieBlox toys build spatial skills and confidence in problem-solving. All GoldieBlox toys are intercompatible. Perfect for ages 4+. Comes with 34 pieces, including fully articulated action figure with articulated joints, hands that grip, brushable hair, and toolbelt and wrench, and 13-foot zipline. Hundreds of how-to building videos online to help spark creativity in young engineers.