Made of premium acid-free PVC, highly transparent and non-toxic, each pocket comes with an anti-slip cover to protect 10 × coin pocket collecting loose-leaf pages with an entire size of 28.0cm x 21.0cm/11.0" x 8.3". Fit standard US 3 rings or A4 European 4 rings collecting binder 6 sizes: 6 pockets (97mm x 82mm each pocket), 9 pockets (65mm x 84mm each pocket), 12 pockets (62mm x 62mm each pocket), 20 pockets (45mm x 45mm each pocket), 30 pockets (35mm x 35mm each pocket), 42 pockets (29mm x 29mm each pocket) Suitable for coins, coin capsules, tokens, medallions, badges, tickets, bills, stamps, trading cards, etc. less than 95mm x 80mm Dustproof, moisture-proof and scratchproof. Effectively protect your precious collection