WHAT'S INCLUDED - Our construction toys include flex track components, race cars, mini construction trucks, traffic signs, tree trees and bridges. Advanced configuration for your little ones to build their own construction kingdom! DIFFERENT TYPES OF CONSTRUCTION VEHICLES - We have configured 4 simulated construction vehicles with unique designs and features. Including hauling trucks, excavators, road rollers, cement trucks and racing cars. Perfect gift for 3 4 5 years old boys toys. MORE ACCESSORIES, MORE PLAY - Race cars can cross bridges, and track parts can be bent and broken to create a variety of different track shapes. Each truck has removable working arms. Kids can pretend to do all kinds of construction work with these trucks and spend hours of creative and imaginative play. CREATE YOUR OWN ROAD - This STEM puzzle toy utilizes Y-tracks, curved tracks, and bridges to help your child use their imagination to build their own track world, helping them develop holistically, limiting screen time and freeing up time for healthy hands-on play. SAFETY & DETAILS FIRST - Meets US Toy Standards. Made from non-toxic materials, safety always comes first. Each building track is uniquely designed to fit perfectly in kids' hands and can be carried around in their pockets to play anywhere.