PuzzleMat Set 24" x 36" Includes 6 - 12" x 12" PuzzleMat pieces. The six mats makes a 24" x 36" rotary cutting mat. You can use as many mats as you like to make the size that you want. The set also includes a handy carrying case. You can expand your set with additional 12" x 12" or 6" x 12" pieces, sold separately. Simply snap the puzzle pieces together to fit almost any area. They are portable and easy to store. You can cut cleaning right over the seams with a rotary cutter. They are economical and long-lasting. A great mat to take to a class. Make your mat any size you want---small or large. You can also purchase smooth edges for your PuzzleMats. They are sold separately. Each mat set needs 2 sets of edges.