3 years & up. Promote problem-solving skills, strengthened hand-eye coordination, and fine motor development with chunky, wooden puzzles. The Big Puzzle Set with Metal Rack includes 24 different puzzles, each with a nature-inspired image, beautiful illustration or recognizable scenario that will encourage conversation and matching. When playtime is over, simply store the puzzle with included base on the included durable rack. This complete set is the ideal addition to any preschool classroom environment. Rack measures 24.8" x 7.3" x 12.2".