THE NORTH FACE PERTEX STUFF BAG PERTEX STUFF BAG I opened it, but it's unused. These are 3L and 5L stuff bags made with Pertex(R) nylon, which is lightweight and highly durable. They come in color fabrics for easy sorting of your belongings and see-through fabrics for easy recognition of the contents. Please check the images for details. If you have any questions, I will add more images, so please ask in the comments section. I will fold it up small for shipping, so please understand and purchase accordingly.