Puzzle Sort & Go sorting trays from Ravensburger are 6 stackable trays for sorting and storing your puzzle pieces. Big enough to hold all the pieces from a 1000 piece puzzle, the blue puzzle-shaped trays can be linked or stacked, whichever you prefer. Each tray measures approximately 19 x 19cm, and is made from high quality plastic. The trays stack within the box supplied, so you can store your puzzle pieces away like this if you prefer.