Joyin Ball Circuits - 3 years and up 150 pieces

150 pieces of premium marble balls with transparent pieces, endless fun for your child to watch the marbles run along the tracks

High quality set! Package includes 100 different color action pieces made of high quality clear solid ABS and 50 pieces of normal size glass balls

All tracks are easy to stick and the set is stable once built with our professionally designed molds

This STEM marble step set comes with an assembly instruction to help kids coordinate their eyes and hands. After learning, they will be able to build different tracks by their imagination and logical mind. Perfect Toy Set to develop children's creativity, logical thinking and hand-eye coordination. Play and gain patience and problem-solving ability. Great gifts for all kids

SAFE CHILDREN: Non-toxic. Meet the European standard. Safety test approved.