Print File Archival FF810 8x10" Size Fold Flap Negative Or Print Sleeving, (packag e of 50) FoldFlap design allows for easy and scratch-free insertion and removal of negatives. Crystal clear polyester allows for safe viewing of material without direct handling. Sleeves are sized to fit Print File Ultima preservers. 3 mil polyester is completely archival and safe for long-term storage. PAT passed