Set includes four wooden, 12-piece vehicle jigsaw puzzles--a race car, a steam engine, a school bus, and a fire engine--each stored in a separate compartment of a sturdy wooden box! The slide-on box lid doubles as a convenient puzzle board! Each puzzle piece is shape-coded on the back for easy sorting. Great for travel! Puzzle play is an exceptional way for children to develop cognitive, physical, and emotional skills. As children work at solving the decorative and themed puzzles, they are also developing hand-eye coordination along with fine and gross motor skills. Problem-solving and logical thinking are also vital life development skills that children learn by playing with Melissa & Doug Puzzles. The Vehicles Jigsaw Puzzles in a Box is an exceptional gift for kids aged 3 to 6 years. Add the Melissa & Doug Dinosaurs 4-in-1 Puzzle to round out the hands-on, screen-free play experience.