THESE POUCHES ARE EITHER TWO LAYER OR THREE LAYER MADE OUT OF POLYESTER/METALLIZED POLYESTER/LLDPE.THESE POUCHES HAVE EXCELLENT PANELS TO DISPLAY YOUR PRODUCT ON ALL THE SIDES BE IT FRONT/BACK OR SIDE.ONE CAN HAVE TWO LAYER TRANSPARENT MATERIAL ON THE SIDES AND THREE LAYER IN FRONT AND BACK SIDE SO THAT ONE CAN VIEW THE PRODUCT FROM SIDE WINDOW.