As in: Your great-aunt’s coverlet, which is coming apart at the seams.
Store quilts with archival materials. Crease marks are the leading cause of textile damage, says Carolyn Ducey, curator of collections at the University of Nebraska International Quilt Study Center and Museum, in Lincoln. For safe storage, lay archival tissue paper (from hollingermetaledge.com) on top of your quilt. Next, gently fold the quilt and place it in a clean cotton pillowcase. Then put it in a box made of polypropylene (from hollingermetaledge.com) and store in a temperature-controlled closet. Very important: Once a year, refold the quilt in a different way―on the diagonal, for example―to avoid fold lines.