The color of the mat is helpful for classification and contrast without causing color confusion.Usean inflatable tube. Convenient finish. You can control the firmness of the tube based on the amount of air added, and it won't bend parts when using a soft inflatable tube. With3 fixing straps. Depending on the size of the puzzle, you can set the straps closer or farther away, or bring them closer to the end of the tube.High quality felt mat. Puzzle stick more firmly on the mat so less chance of crease.Comewith a storage bag for better protection of your puzzles. With the bag,you can also hang it in your closet, on rack and door and etc.Bigger mat for up to 1500 pieces puzzlesize: 80cmx118cm/31.50''x46.46''color: Black/Grey(Optional)Application: Storage Puzzle Mat Material: Environmental Protection FeltFeatures: environmentally friendly material, clear frame, very lightPackage included : 1x Felt puzzle mat1x Storage bag3x Fixed bar1x Inflatable tube1x Bonus Mini Pump(Excluding puzzles.)