Ages 6+.Includes 3 different piece counts and 4 total puzzles to gradually build puzzle skills.100-200 piece puzzles perfect for kids that recently graduated from smaller piece counts.Sorting made simple with color-coded backs.4 storage bags included for portability.All puzzles measure 14.75in x 10.5in (37.5cm x 26.7cm).Includes Space, Fantasy, Dinosaurs, and Food puzzle themes - something to appeal to everyone!Helps develop basic skills such as shape recognition, concentration, patience, problem solving, memory, and hand-eye coordination.