Educational and early learning development, help your kids learn their own body structure and their functions. Each of the layers' wooden puzzle focuses on a different system that exists within the human body (skeletal, respiratory, digestive, muscular, and integumentary/skin). This will improve kids' imagination ability, practical ability, and cognitive ability. This promotes hand-eye coordination and fine motor skills as your toddler will concentrate to place the pieces in all its proper places. The Puzzles are made of Non-toxic finishes and child safe materials. Age Group: > 3 years old Feature: Safety Education Toy, Biological Toy, Human Body Structure Material: Light Weight Wood What's in the box 1 x Human Body Puzzle Box