Ravensburger’s jigsaw puzzles for kids are crafted with premium quality, in terms of both content and material. Anti-glare surface - Ravens burger puzzles use an exclusively developed, extra-thick cardboard combined with our fine, linen Structured paper to create a glare-free puzzle image and give you the best experience possible. Every piece is unique – None of the frustrations you find with other puzzle brands. With Ravens burger, Every individual piece has a completely unique shape. Perfect for your child – jigsaw puzzles help support a child's development as they play, building skills such as concentration and creativity. Makes a great gift - Puzzles are a fun activity to do alone or in a group, and make a great gift for all ages at birthdays and holidays.