Plastic enclosures manufactured from polyvinyl chloride (PVC) are not recommended for archival photographic storage. This plastic, often referred to as "vinyl", is not as stable as some other plastics. It can contain volatile plasticizers acid as it deteriorates.
• Rip Resistant Seals
A stitched sealing method that allows each seal to work independently to resist tearing, unlike straight-line that continue to separate completely once the rip begins. In addition, stitched sealing increases the airflow between pockets and therefore further protects against ferrotyping, moisture.
