Baseball Card Binder Light But Sturdy The outside of this card binder is made from durable and waterproof PU leather material. Card sleeves are made of clear polypropylene, durable, waterproof, super sturdy not easy to break, good to protect your card from fading and stain, prevent degradation, and provide increased longevity. Transparent Pages The inner sleeves are high transparency for easy identification of cards. Solid Construction We've tested our binders to their limits to ensure they are safe for your most prized cards. The sturdy zipper protects the card binder to close, prevents internal cards from falling, and the heavy-duty metal rings with proven durability. No Risk Purchase Any problem with the baseball card binder sleeves, Feel free to contact us, we will solve it immediately.