Cobble Hill Family Puzzles are special 400 piece puzzles with small, medium, and large size pieces. The large pieces, good for young children, are on one side of the puzzle. The small pieces, good for adults or puzzle experts, are on the other side. And in the middle are medium size pieces. Small hands have an easier time picking up large size pieces. As well, it's easier to see the detail of the image in a large or medium size puzzle piece. However, don't be surprised if the younger one is picking up the small pieces with their eagle eyes! Sometimes, it's the adult with impaired vision who enjoys working the larger size pieces! Family Puzzles is the missing "piece" to your family time!