Since 1891 Ravensburger has been making the finest puzzles and it's their attention to detail which makes Ravensburger the world's greatest puzzle brand! Ravensburger uses an exclusively developed, extra-thick cardboard and combine this with their fine, linen-structured paper to create a glare-free puzzle image. Their cutting tools are designed and crafted by hand. This ensures that no two pieces are alike and guarantees a perfect interlocking fit. Experience the quality!