All BugZip® encasements are made of heavy-duty clear vinyl that resists tears and can easily hold large objects inside. The specially designed three-sided bed bug resistant zipper allows easy access to your clothes and belongings while "zipping" out bed bugs when they are on the move at night. All BugZip® Encasements come flat folded in a 10x13x1 in. retail bag which fits nicely in most suitcase pockets during travel.