Different Immersive Builds --- You can assemble in different ways! In this way your child can learn how to build many different tracks with the different accessories. The marble galaxy pieces are all translucent so the racing marbles are all visible! Improve Operational and Creative Ability --- The colorful marble run toy set of blocks can improve childrens operation ability and also helps your children improves creative thinking and problem solving ability. Manufacturered by TIAS. High Quality ABS Material --- Your kids safety is our top priority. We have used premium ABS plastic to create a 100% non-toxic marble run track. In addition the edges of the marbles building set are all smooth to prevent injuries while the easy lock pieces provide sturdy and stable construction for endless loops of the marble run. Ideal Gift for Child --- The 105/109 DIY trace building blocks are a good educational toy for your family. Perfect marble game toy choice for birthday gift children party favor after-school fun Christmas presents and all other holidays. Interactive Game --- Assemble these blocks with your children at home or outdoor playing its wonderful parent-child game adults and children together to participate in the most interesting.