10 Premium Polyester Museum Grade Large Mylar Currency Sleeves, 8 1/4 x 4 7/8", by Lighthouse Museum grade, Top fold-over currency sleeves made of premium quality polyester. Perfect for long term storage. Contains NO PVC, acids or chemical softeners. Manufactured by Lighthouse, a band name you can trust! Size: 8 1/4" x 4 7/8", Currency NOT included.