I have fabric that is 20 years old from my sewing days. It is stored in plastic totes with a few small holes drilled on the lids and on the sides. I just checked and all seems fine. Found some beautiful fabrics in those boxes so I might just sew me some new clothes for spring/summer. What fun finding this stash!. As long as the fabric can breathe it should last a long time if stored properly. If a quilt can last a hundred years or more why can't our fabric? Thanks for the question Melissa; as I found a forgotten teasure.
Connie