Excessive humidity is the greatest danger in storage, therefore plastic bags by their very nature are conducive to mold and mildew formation. It requires a steel or glass container that can't breathe. Use an acid free box with acid-free tissue paper. Do not cover or seal with plastic since this type of storage builds up an acid condition that hastens deterioration. Museum conservators now require long-term storage boxes to be acid free and buffered to keep it acid free.
Archival quality means it is suitable for contact with historic materials.
The hope of the Bride is that her wedding gown becomes 'historical' having been worn by many generations of brides. The Museum Quality Storage Box is mill certified by the American National Standards Institute. It was designed for the Smithsonian Institute and is used by conservators internationally. There are two cotton liners, one inside the storage box, and the other fits over the box. It also serves as a blotter helping to keep any mositure away from the gown.