For just at home storage I keep mine on a shelf in my book case, lined up so that the stickers showing what shape it is is facing out for easy retrieval ! I slip the mats in with the same size dies so the dies keep the mat flat ! My long strip dies are stood up between the side of the bookshelf and the wall and the long mat is hanging from a hook with my cutting mats. For travel I would make a long bag maybe with a strap that would fit the die and the mat ?