Creative Domino Train SetWe brings you and your kids first domino set-up game. Line them up with the help of your domino train and start the chain reactions. According to childrens spatial thinking abilities, build your desired domino race track. The Dominoes train toy set can provide you diverse fun, dominos for kids will enrich your kids' coordination, color recognition, mental exploration, and family interaction. Automatic Laying Function-Each 1.5CMJust put the plastic blocks in the cartridge, your domino blocks go up into the holder and stay there until your train releases them as it travels over the floor or table, leaving a perfect row of dominoes just waiting to be knocked down. You need 2 AA batteries to start the train toy.( batteries not included) Safe MaterialMade of premium ABS, non-toxic, tasteless plastic, the smooth edges to ensure children's safety during their playing. The train and doninos are strong, rounded and unbreakable. Endless Donino Racing FunBuild your desired domino race track with 100 pieces of colorful plastic blocks. Super fun for your kids to play Set them up all in a row, and then push one and watch the chain effect of the dominoes tumbling over like a race. Idea Gift for Boys and GirlsThis is a great gift that can bring happiness to children on Christmas, Halloween, and birthdays. It is a good gift toys for 3+ year old kids.