78 rpm/10" Record Mylar (Polyester) Sleeves

MUSEUM GRADE ARCHIVAL POLYESTER 
These 78rpm Record Sleeves sleeves are made of 4 mil archival polyester (Mylar), an inert material of the highest clarity.

• Polyester will not discolor, damage or adhere to items placed inside it. We use DuPont inert Melinex or a suitable equivalent. This material has passed the Photo Activity Test.
• Use polyester (Mylar) to ensure your collectibles remain in excellent condition for years to come. Polyester is used worldwide in museums, libraries, and archives. Our polyester material is approved by the Library of Congress for archival storage.