Match the marbles on every hexagonal side of the puzzle pieces to create a marvelous marble-y mosaic! There are 19 hexagonal paper card tiles each showing 6 halves of different colored marbles. Not for the feint of heart, it's harder than it looks! Suitable for ages 6 and up, but not recommended for children under the age of 3. The box as well as the hexagonal card tiles measure approximately 3" x 3" - the perfect size for travel, stocking stuffers, desk top, or a little gift for just about anyone who loves challenges.