The Puzzle Sorter is an ideal puzzle accessory that makes assembling your puzzles easier. The unique, specially designed puzzle containers (20 x 20 cm) are perfect for sorting and storing puzzle pieces by shape and color. The six sturdy plastic containers can be stacked or distributed across the puzzle area as desired. The Puzzle Sorter works very well with Portapuzzle boards and Puzzle & Roll accessories. It is suitable for sorting most puzzles with standard dimensions.