Make a memory-filled mason jar card that folds flat for mailing. Mason jars bring back memories of home and the simple life. This darling die set can be made into either a 3D mason jar-shaped box card that folds flat for mailing. Embellish your mason jar with the included flowers and leaves to create a gorgeous floral arrangement for any occasion. Finished box card folds flat and fits into an A2 envelope. Each set contains 12 thin metal dies. Finished box measures 2.75 x 3.75 x 1.5 inches.