105-Piece Kids Marble Run Coaster Track Toy Set

105-PIECE SET: Fun and creative marble run set is complete with 75 structure pieces and 30 marble balls, allowing children and adults to have as much fun building as they do playingCUSTOMIZABLE PATHWAYS: Learning is made fun, as children can create simple or complex railway paths and watch the marbles go through the tubes, made transparent for easy viewingEASY TO ASSEMBLE: Pieces are designed to snap neatly together for easy composition, teaching kids handy skills to build things all by themselvesCHILD DEVELOPMENT: Teaches valuable skills such as shape recognition, creative learning, and problem-solving while stimulating a lifelong interest in physics and related  subjectsSAFE MATERIAL: Made of non-toxic ABS plastic, so you can remain worry-free as your child plays; OVERALL DIMENSIONS: 15"(L) x 12"(W) x 4"(H)