This marble race toy is a blast The 105 pcs DIY trace building blocks are a good educational toy for your family. The marble race track is a big point to teach young children about momentum and properties of gravity through the marble running in the track. You can put them together if you want,so you can let your children build the blocks differently each time with their imagination. This is a great game for your family. ・Colorful and beautiful appearance can stimulate the brain and thought of children ・Assemble these blocks with your children can create wonderful memory together ・Plastic building pieces are of high quality,durable and easy to build ・Create your own maze model using your imagination,and watch the marbles race through the track ・29/80/105 pcs deluxe marble race game is suitable for children over 3 years old ・There are 105 in total,including 75 building pieces and 30 marbles ・Set of blocks for children can improve their hands-on ability,creativity,exploring ability,hand to eye coordination,color discrimination,and sparkle their imagination ・Caution for small components ・ Note:there are 30 glass balls in 678-7 box,30 glass balls in 678-5 box and 15 glass balls in 678-1 box. Specifications: ・Styles:678-7 (105pcs),678-5 (80pcs),678-1 (29pcs) ・Material:plastic ・School age:over 3 years old ・Improve children's ability of operation,creativity,exploration,hand eye coordination,color discrimination,and stimulate their imagination Package included: ・1x3D Labyrinth Pipe Track Block Ball Toy