3, Quality: The photocard sleeves are made of high quality polypropylene with ultrasonic welding technology which make them tear-resistant, non-toxic, no PVC, harmless for your pictures. -Material: polypropylene, tear-resistant, non-toxic, no PVC, ultra-clear and water/dust proof-Top Loading: insert or take out with easy access, and photos would not fall out as long as the protector sheets keep flat or upright.
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