100 Cardboard Sleeves for Sports Trading Cards, 3 x 4.5 Inch, Folded Flat, Protective Mailers for Shipping, Vending and Card Storage Inserts

• Standard Fit: Sized at 3 x 4.5 inches to accommodate most sports and trading cards
• Reliable Protection: Strong cardboard construction helps prevent bending and corner damage during transit or storage
• Space-Saving Design: Supplied flat for easy storage and quick assembly when needed
• Multi-Purpose Use: Suitable for shipping, mailing, vending, or use as protective inserts in card packaging
• Value Pack: Includes 100 high quality cardboard sleeves, ideal for collectors, sellers, and hobby use

Protect and ship your valuable trading cards with these durable cardboard sleeves designed for everyday collectors and sellers. Each pack includes 100 sleeves sized to fit standard sports and trading cards, offering a practical solution for mailing, vending, storage, and general handling. The 3 x 4.5 inch dimensions provide a snug and secure fit, helping keep cards flat and protected during transit or display. Made from sturdy cardboard material, these sleeves act as reliable stiffener inserts to reduce bending, creasing, or corner damage. Whether you're sending out individual cards to buyers or organizing inventory for shows or online orders, these sleeves help maintain card condition from packing to delivery. Their flat, foldable design makes them easy to assemble when needed while saving space during storage. Ideal for sports trading cards, collectible card games, and similar standard-size cards, these sleeves offer versatile use across different collecting needs. They are well-suited for use with additional protective layers such as soft sleeves or top loaders, adding an extra level of support for more valuable items. The clean, simple design ensures a professional presentation when shipping or packaging cards for customers. These cardboard sleeves are also a convenient choice for small businesses, resellers, and hobbyists who require consistent and dependable packaging supplies. With 100 pieces included, you’ll have a ready supply for multiple shipments or events without frequent reordering. Lightweight yet strong, they help keep postage efficient while still providing essential protection. Whether you're mailing single cards, preparing vending stock, or organizing your collection, these sleeves deliver a straightforward and effective solution. Designed with practicality and protection in mind, they are a reliable addition to any trading card setup.