"Cat's Got Mail" Large Format Puzzle. 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! They use 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!