The Roll Your Puzzle 300-1500 Pieces mat from notable puzzlemaker Ravensburger offers you a dual-function work surface for puzzles of up to 1500 pieces. First, do the puzzle on the felt sheet, which provides a flat, non-slip surface ideal for puzzles. Then, once you need to move or store your puzzle, simply inflate the tube, wrap the felt around it, and secure it with the supplied rubber bands. Both loose and complete pieces cling to the mat, ensuring that nothing gets lost. When you unroll it later, you'll find that all the pieces have remained in position! The Roll Your Puzzle 300-1500 Pieces measures approximately 100cm x 66cm.