Melissa & Doug Princesses of the World Jumbo Jigsaw Floor Puzzle (48 pcs, over 4 feet long) Chipboard Imported 12 x 9. 5 x 3. Melissa & doug floor puzzles are extra large and extra tough! Built to last through years of play, the jumbo cardboard pieces are just right for young children: they are easy to grasp, lift, and connect, and they fit together to create stunning oversize scenes. Melissa & doug floor puzzles are an engaging way to help kids build developmental skills, such as fine motor skills, hand-eye coordination, cognitive abilities, and social skills.