The Portapuzzle has a unique surface that holds the puzzle pieces in place and also makes an excellent surface for puzzling. The Portapuzzle is lightweight yet sturdy and easy to transport and store. While puzzling, place the puzzle in the center of the Portapuzzle and sort the pieces on the side and removable panels. When you're finished puzzling, place the removable panels over your puzzle, remove the pieces from the side panel, and then fold the side panels over the center. Close the center Velcro tab, then the Velcro tabs at the top and bottom of the board. You can now safely transport or store your puzzle until you're ready to continue puzzling. Suitable for most puzzles up to 1000 pieces with a standard size (approximately 68 x 49 cm).