First Day Cover Sleeves & Backings

Our First Day Cover Sleeves come in 2 materials
• Polyethylene 
for Long-term Storage
• Polyester (Mylar) for Indefinite Storage
For Poly material specifications click here.

The Backings for these sleeves also come in 2 materials:

• .028" thick Acid-free Board for Long-term Storage
• .040" thick Acid-free, Lignin-free, Buffered Board for Indefinite
For Backing material specifications click here.

We have added a new style of Polyester sleeves called 'Folder' Sleeves which are sealed on one long side only. The inherent static in polyester material, keeps the stored image securely in place.