Toddler building blocks are some of our best early childhood memories and are among the most beneficial gifts to give to children aged 18 months up to 3 years and provide countless hours of fun, engrossing entertainment while also providing opportunities to strengthen fine motor skills. When children master their foundation in fine motor skills, they are able to further develop their cognitive thinking ability through simple problem-solving and the use of spatial intelligence while also establishing the beginning formations of their identity and self-expression. These blocks are for use by kids from 3 years and above. Care should be given to ensure that kids do not choke over the small parts blocks. All parts can be cleaned with soap and water to remove accumulated dust and food particles. These toys are unique because they already have wheels that you can easily fix into cars that can be joined together to make trains.