Companion to the card index guide and to How to play the Gundam Card Game. This page is about protecting what you already own; what to buy is covered in sealed or singles.
Quick answer
A Gundam card is 63 by 88 millimetres, which is the same standard size as Pokémon, Magic and One Piece, so nothing about fit is a problem: every standard sleeve, toploader and binder page already works. Bandai’s own sleeve for the game is 67 by 92 millimetres, which is the usual few millimetres of clearance over a standard card. There is no Gundam-specific accessory problem to solve, and any guide that implies otherwise is selling something.
What does need attention is different. This is a foil-heavy game: the printings that carry value are parallel foils, and a foil card fails in ways a plain card does not. It curls, it marks on the face, and it shows every handling event. The holder you choose matters less than the number of times you change it.
The measurements
Four numbers cover almost every decision, and all four are standard across the hobby rather than specific to this game.
| Object | Size | What it means in practice |
|---|---|---|
| Card | 63 × 88 mm | Standard size, identical to Pokémon, Magic and One Piece |
| Official sleeve | 67 × 92 mm | Four millimetres of clearance on each axis, which is normal |
| Rigid toploader | 3 × 4 inches external | Holds a sleeved standard card; the same holder as every other standard game |
| Deck | 50 cards plus a resource deck | Fits a standard 100-card deck box once sleeved |
The only number that can mislead is the sleeve width. A 67 mm sleeve is a snug fit on a 63 mm card, which is correct: the card should not slide. If a sleeve feels loose enough that the card shifts when you tilt it, it is the wrong sleeve, and the most common cause is Japanese-size product intended for a smaller card.
What fits, and the one thing that does not
- Standard sleeves. Fit. Any sleeve sold for Pokémon, Magic or One Piece will take a Gundam card, including double-sleeving setups.
- Japanese-size sleeves. Do not fit. These are made for the smaller card format used by some Japanese games, and a 63 mm card will not go in without forcing it, which damages the corner you were protecting.
- Toploaders and one-touch cases. Fit, because the card is standard size and the holders are sized around it.
- Binder pages and boxes. Fit, and a 50-card deck plus its resource deck sits comfortably in a 100-card box.
The practical upshot is that you do not need to buy anything Gundam-specific. What you do need is to buy one system and stay in it, because mixed holders of slightly different internal dimensions stack unevenly and the pressure shows up on the card faces rather than on the holders.
Four ways a card fails in storage
Card damage in this hobby is well catalogued, and the seven types apply here as anywhere. Four of them account for nearly everything that happens to a Gundam collection.
- Foil curl. A foil layer and a paper core absorb moisture at different rates, so a parallel card bows across its short axis in a humid room and flattens in a dry one. The curl is reversible; the crease you get from forcing it flat is not.
- Surface abrasion. Sliding a card into a rigid holder drags the face across the lip. On a base card this is cosmetic. On an LR++ it is the difference between one grade and another.
- Pressure. A stack, a full binder page or a box stored under something heavier will transfer an edge or a print line onto the card beneath. Foils take a pressure mark more visibly than plain cards.
- Light. Ultraviolet fades the printed surface and, on some foils, shifts the colour of the reflective layer. A shelf in direct sun is the fastest way to change a card without touching it.
None of these is caused by time alone. All four are caused by an environment or a handling decision, which means all four are preventable without buying anything expensive.
The sleeving order that suits this game
For a card that will be played, one sleeve is enough: a matte sleeve, replaced when it gets scuffed rather than when it looks dirty. For a card that will be kept, the order is inner sleeve first, opening downwards, then outer sleeve opening upwards, so the two openings are at opposite ends and nothing can enter.
For a card that will be stored rather than handled, the choice is between a sliding holder and a closing one. A 3×4 toploader is a sliding fit, which is fine once and progressively less fine each time you re-insert the card. A press-fit case closes on the card without lateral movement, which is the better answer for a foil that will sit still for years, and a display slab is the version to use when the point is to look at it.
One rule that is specific to foils rather than to this game: do not re-sleeve to photograph. Every re-sleeve is a handling event, and the photographs are not worth the scratch.
Storing a collection without over-buying
The temptation with a new game is to buy a protection system for each part of it. The measurements above make that unnecessary: one sleeve type, one rigid holder type and one box will cover a collection of any size, because the cards are the same size as everything else you already own.
Spend the difference on the environment instead. A stable interior room beats a garage or a loft, because the swing between seasons is what does the damage rather than the average humidity. A closed cabinet beats a shelf, because it removes light. A desiccant in a sealed bin helps only if the card went in dry; sealing damp board into a plastic box concentrates the problem rather than solving it.
For the bulk, a labelled box sorted by set code is more useful than a binder, and cheaper per card. For the top dozen, individual rigid holders kept out of the sorted stack. That is the whole system, and it does not change when the next set arrives.
Where this sits
If you have not yet bought anything, start with sealed or singles and come back here once you have cards to protect. For the accessories landscape across games, accessories for every TCG is the wider view, and sleeve sizes covers the measurement question in more depth.
Frequently asked questions
Do Gundam cards need special sleeves?
No. They are 63 by 88 millimetres, so standard-size sleeves fit. Gundam-branded sleeves exist, but they are a design choice rather than a sizing requirement.
Will Pokémon sleeves fit Gundam cards?
Yes, and so will One Piece, Magic and any other standard-size sleeve. The card is the same footprint, so the accessories are interchangeable.
Why do my foil cards curl?
Because the foil layer and the paper core take on moisture at different rates. The curl reverses when the air dries; forcing the card flat is what turns a curve into a crease.
Is a toploader safe for long-term storage?
It is safe, but it is a sliding fit, so every insertion abrades the face. For a card that will not move again, a case that closes on the card is the better choice.
Do Gundam cards fit standard grading slabs?
They are standard size, so the slab dimensions are not the obstacle. Whether grading is worth it for a given card is a separate question, covered in grading Gundam cards.
What the protection problem looks like
Three cards, chosen because each fails in storage for a different reason.
Image note: the cards described in this section are not shown. There is no public scan database for the Gundam Card Game equivalent to the Pokémon archives, and the manufacturer’s card pages serve images under terms that do not permit rehosting. The descriptions above are written to be checked against the physical card.
Sources
Sources and further reading
- Bandai Namco — 1st Anniversary Set product specification, listing the card at approximately 63 by 88 mm and the card sleeves at approximately 67 by 92 mm.
- Bandai Namco — starter deck contents, confirming a 50-card preconstructed deck with a separate resource deck.
- Retailer and collector guidance on standard-size versus Japanese-size sleeves, for the fitting rule described above.
- CardSpicy — The seven types of card damage, for the failure modes summarised here.
- CardSpicy — Card sleeve sizes explained, for the measurement conventions.
- CardSpicy — Humidity and card storage, for the environmental side in full.
Related reading
- Card sleeve sizes — the measurements, across every game.
- Sleeve thickness — why a foil card wants a different sleeve from a play card.
- Penny sleeve vs toploader — the two-layer decision.
- Humidity and card storage — the cause of most foil curl.
- Card case sizes — rigid holders compared.
- Sealed or singles — what to buy, before you store it.
Nothing on this page is investment advice. Dimensions are as published by Bandai; storage guidance is about physical condition and does not imply anything about what a card will be worth.
Where to go next
- The CardSpicy card index — every card we track, with its PSA 10 population and market history (195 cards).
- The illustrator index — every artist behind those cards, card by card (110 artists).
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