Card-care glossary
Understand sleeve, storage and grading terms before comparing accessories or planning a submission.
Use these working definitions alongside the specification for the exact accessory. Product names such as “perfect fit” and “archival” do not replace dimensions or a material declaration.
Protection and fit
Card footprint: the card’s width and height viewed from the front. A thickness match cannot compensate for an incompatible footprint. A holder for a thick standard-format card is not necessarily suitable for an oversized card.
Clearance: the space available around the card or sleeved card inside the enclosure. Published outer dimensions alone cannot establish internal clearance. Stop if insertion needs force.
Standard / small sleeve: accessory size classes. Ultra PRO associates standard with games including Pokémon and Magic, and small with games including Yu-Gi-Oh!. The maker lists 66 × 91 mm and 62 × 89 mm respectively for its sleeves. Other ranges need their own checks. See sleeve sizes.
Inner sleeve / perfect fit: a close-fitting sleeve intended to sit beneath another sleeve. “Perfect fit” is a product description rather than a universal clearance specification. Check both layers together before choosing a binder pocket.
Penny sleeve: common collector language for a simple soft sleeve. It describes an accessory type rather than a current price. Graders may require a clear version; an opaque play sleeve may be unsuitable.
Double sleeving: using a compatible inner and outer sleeve together. It adds material around the card, which affects pocket and holder fit. It is not a claim of waterproofing. Read the double-sleeving guide.
Toploader: an open-top, relatively rigid card holder. Card thickness capacity and footprint both matter. It is distinct from the more flexible semi-rigid holder requested by some grading routes.
Point (pt): the thickness unit used on many holders, with 1,000 points equal to one inch. Conversion: pt × 0.0254 = millimetres. The rating belongs to the holder capacity; a 35 pt example does not establish the thickness of every ordinary card. Use the protection finder as a starting point.
Semi-rigid holder: a flexible support enclosure used by some submission services. It is not interchangeable with a rigid toploader. Check the recipient’s current permitted dimensions and packing process.
Storage and display
Pocket count: the number of independently usable openings in a binder. A nine-pocket sheet can have one or two pocketed sides. Count the physical sheets and actual pocketed faces before using the capacity planner.
Reserved pockets: our planning term for spaces deliberately left empty for set order, future additions or separators. They reduce the number of cards allocated to each binder; they do not imply a manufacturer recommendation to underfill by a particular percentage.
Acid-free: a material claim associated with acidity, particularly of paper and board. It does not establish every property of an enclosure, closure, lining or plastic pocket. Ask what material the claim applies to. See storage materials.
Relative humidity (RH): moisture in the air expressed relative to saturation at that temperature. It changes with temperature; a reading is most useful with its location and time. General paper-conservation targets are not a guarantee for every coated, foil or composite trading card.
Light exposure: the combination of light reaching an object and the time it remains exposed. UV filtering addresses only part of the problem; visible light can also affect paper and colourants. See display planning.
Preventive conservation: reducing the risks of future damage through environment, storage and handling. It is different from treating existing damage. A storage guide is not a cleaning, flattening or restoration procedure.
Submission logistics
Submission order: the sequence of cards recorded in the receiving service’s paperwork. PSA asks for the physical stack to match this order. Check the list before sealing the box and keep a copy with your records.
Business-day turnaround: a provider’s stated processing estimate using its own counting rules. It is not automatically the time from posting a parcel to receiving it back. Transit, intake and other stages may be additional. Use the live service terms before scheduling around a return date.
Declared value / value cap: a service’s declaration and eligibility concepts. Their definition and consequences come from that provider. A calculator cannot assess a card’s value or promise a particular grade. Compare currencies separately in the grading comparer.
Continue with the FAQ for common decisions or the knowledge base for a complete care route.
Sources & checks
- Ultra PRO: Small & Standard Sleeves · Checked 2026-11-02
- Ultra PRO: thickness gauge · Checked 2026-11-02
- Canadian Conservation Institute: Storing Works on Paper · Checked 2026-11-02
- PSA: shipping guide · Checked 2026-11-02