BCW 2x2 coin snaps are a secure and safe way to store, display, and protect your most valued coins.The foam inserts securely hold your coins, are black on one side and white on the other, and you can write on them.They are individually plastic wrapped so they won't get scratched during shipping.The 2-piece snap together design is easy to use.They are stackable and also feature notches that make them easy to reopen.They are made of archival inert polystyrene that will not harm your coins.Contains no PVC.You get 5 each of cent, nickel, dime, quarter and half dollar sizes, packed in a reuseable storage box.Overall size 5.1cm x 5.1cm x 0.6cm .