Copperhead Penny Sleeves are a lightweight, clear polypropylene sleeve cut at 2.5in × 3.5in for standard-size cards — an affordable first layer of protection for bulk cards, binder pages, or cards headed into another sleeve or toploader.
Penny sleeves are the entry point for card protection: acid-free and non-PVC, so they’re safe for long-term storage, but thin enough to add almost no bulk. They’re the standard choice for sleeving bulk commons, cards going into binder pages, or cards that will be top-loaded afterward.
Move your best cards up to a Snakeskin matte sleeve for gameplay, or file penny-sleeved cards in one of our zip binders.
Are penny sleeves safe for long-term storage? Yes — they’re acid-free and non-PVC, which is what matters for keeping cards from degrading over time.
Can these go inside a toploader or binder page? Yes — penny sleeves are commonly used as the first layer under a toploader or inside a binder pocket.
Do you sell these in bulk? Yes — see our case of 50 packs or carton of 300 packs.
For more on how basic sleeving fits into card collecting generally, see Wikipedia’s overview of the collectible card game format.
Keep sleeves away from excess heat and humidity, which can warp polypropylene over time, and store sleeved cards upright rather than under heavy, uneven pressure.
Viper Sleeves is a family-run team based in Mesa, Arizona, and Copperhead Penny Sleeves exist for the everyday task of protecting a large collection affordably. It’s the sleeve we reach for on bulk cards ourselves.