The STEM building toy system for toddlers, Grippies Builders combines tactile exploration, magnetic play and an introduction to the basic principles of engineering and geometry. Grippies unique, magnetic rod and ball configuration provide a secure, frustration-free set of construction options as children first discover the joy of building. Unique in concept and design, Grippies provide a fun, safe and exploratory experience for toddlers. The 20 piece set features 4 soft matte textures in exciting bright colors. Open-ended magnetic STEM building toy for toddlers, ages 18 months+ Combines tactile exploration with magnetic play. Provides introduction to engineering 20 piece set in exciting bright colors Over-sized ABS Plastic rod encapsulates magnets. Accompanying metal balls are over-molded with soft plastic. Seamless texture for secure construction. Exterior features 4 soft matte textures Winner of the Tillywig Brain Child Award, the National Parenting Center's Seal of Approval, Parents' Choice Awards Silver Honor, and the Oppenheim Gold and Special Needs Adaptable Product (SNAP) Awards