Since 1891, Ravensburger has been making the finest puzzles with incredible attention to detail! Extra-thick cardboard and combine this with fine, linen-structured paper to create a glare-free puzzle image for a quality you can feel. Steel cutting tools are designed and crafted by hand. This ensures that no two pieces are alike and guarantees a perfect interlocking fit. This Ravensburger dinosaur 60 Piece Puzzle is perfect for ages 4 and up.