Product Features: Snap-on Design: Allows for an unlimited variety of track layouts—straight lines, curves, ramps, and even vertical tracks. Trains can go uphill, downhill, and even upside down, providing a thrilling play experience. Easy Assembly and Storage: Quick-release snap-on track components make building and storage simple. The detachable design makes storage and carrying convenient, ideal for solo play or parent-child interaction. Safe and Sturdy Perfect Gift: Made with high-quality child-safe materials. Helps develop children's creativity, coordination, and problem-solving skills. An ideal gift for birthdays, holidays, or special occasions. The Rail Cubes Monorail Train Set offers expanded block combinations for building more complex and intricate tracks. Create multi-layered routes and imaginative curves as mini trains glide effortlessly along the tracks, providing an engaging and dynamic play experience. The Perfect Gift for Children: An educational and fun toy that grows with your child. Preschoolers can develop hand-eye coordination by building basic road systems, while children aged 3 and up can use the snap-on tracks to create more complex patterns. It's a perfect gift for birthdays, Easter, Christmas, Thanksgiving, or other holidays. Note: 1. Due to different lighting effects, the actual color may differ slightly from the picture. 2. Please allow 1-3 cm error due to manual measurement. Product Description: Specifications: 123 pieces, 81 pieces, 51 pieces Package List: 1 set of trainers