Most TCG cards fall into one of two sleeve categories: standard size or Japanese size. Standard-size sleeves fit Magic: The Gathering, Pokémon, Disney Lorcana, One Piece, and Flesh and Blood. Japanese-size sleeves fit Yu-Gi-Oh! and smaller-format cards. Matching the sleeve size to your card format is the first step to a clean, protective fit.

Quick Verdict

If you play Magic, Pokémon, Lorcana, One Piece, or Flesh and Blood, buy standard-size sleeves. If you play Yu-Gi-Oh!, buy Japanese-size sleeves. Confirm the sleeve package lists the correct size for your game before ordering — sleeve naming conventions vary by brand and can be confusing.

Why Sleeve Sizing Is Confusing

Sleeve sizing terminology is not standardized across the industry. What one brand calls “standard” another may call “regular,” “poker size,” or “MTG size.” Similarly, what’s listed as “Japanese size” may also appear as “small,” “mini,” or “Yu-Gi-Oh! size” depending on the brand.

The actual card dimensions determine the fit — not the sleeve brand’s marketing name. Before ordering sleeves for a new game, confirm:

What format is the card (standard or Japanese)?
What does the sleeve package list as its intended game or card size?
Does the sleeve brand’s own product page confirm compatibility with your TCG?

This guide uses “standard size” and “Japanese size” as the two primary categories, which is the most consistent terminology in use across the TCG community.

Quick Lookup Table

Game	Card Format	Sleeve Category
Magic: The Gathering	Standard	Standard size
Pokémon TCG	Standard	Standard size
Disney Lorcana	Standard	Standard size
One Piece Card Game	Standard	Standard size
Flesh and Blood	Standard	Standard size
Yu-Gi-Oh!	Japanese	Japanese size
Sports cards (standard)	Standard	Standard size

Important: This table reflects the primary card formats for each game. Some games have had promotional or alternate formats over the years. If you’re sleeving an unusual or vintage card, measure the card against a fresh sleeve or confirm with the sleeve manufacturer’s compatibility notes.

Standard Size

Standard-size sleeves are designed for cards measuring approximately 63mm × 88mm (though the exact card dimensions vary slightly by game and manufacturer). Standard-size sleeves are typically listed as fitting MTG or Pokémon cards.

Magic: The Gathering

MTG cards are the original reference point for standard-size sleeves. Any sleeve labeled as “MTG size,” “standard,” or “poker size” should fit MTG cards. Confirm the sleeve’s listed compatibility with MTG on the product packaging before purchasing a new brand.

Pokémon TCG

Pokémon cards are standard size and use the same sleeves as MTG. The sleeve selection for Pokémon is one of the widest of any TCG, with hundreds of art sleeve options from Pokémon Center and third-party suppliers in addition to standard matte and clear options.

Disney Lorcana

Lorcana cards are standard size. Standard-size sleeves fit Lorcana cards from all sets. Note that Enchanted foil cards have a slightly thicker card stock due to foil treatment — this does not change the sleeve size needed, but it may affect fit in very snug inner sleeves. See our best sleeves for Disney Lorcana foils guide for Enchanted-specific advice.

One Piece Card Game

One Piece cards are standard size. Standard-size sleeves fit all One Piece cards, including Leader cards. If you’re looking for One Piece-specific guidance, see our best sleeves for One Piece TCG guide.

Flesh and Blood

Flesh and Blood cards are standard size. Standard-size sleeves fit all FaB card types.

Standard Sports Cards

Modern standard-size sports cards (basketball, baseball, football, etc.) are generally standard size and fit in standard TCG sleeves. Older or specialty sports cards may have non-standard dimensions — measure before sleeving if you’re unsure.

Japanese Size

Japanese-size sleeves are smaller than standard size, designed for cards measuring approximately 59mm × 86mm. They are most commonly associated with Yu-Gi-Oh! in Western markets.

Yu-Gi-Oh!

Yu-Gi-Oh! cards use Japanese-size sleeves. Standard-size sleeves will be visibly too wide for Yu-Gi-Oh! cards. Most sleeve brands that sell Japanese-size sleeves will specifically list Yu-Gi-Oh! compatibility on the packaging.

Note on “Japanese” in sleeve names: Some Japanese-market Pokémon TCG cards are also smaller than the standard international Pokémon size. If you’re sleeving Japanese-language Pokémon cards specifically, confirm the card dimensions before assuming standard-size sleeves fit. This does not affect English or international Pokémon TCG cards, which are standard size.

Inner Sleeves and Perfect Fits

Inner sleeves (sometimes called “perfect fits”) also come in both standard and Japanese sizes. If you’re double-sleeving, your inner sleeve and outer sleeve must both match your card’s format.

Standard-size inner + standard-size outer: Correct for MTG, Pokémon, Lorcana, One Piece, FaB
Japanese-size inner + Japanese-size outer: Correct for Yu-Gi-Oh!
Mixing sizes: Will result in a poorly-fitting sleeve stack. Don’t mix.

See our inner vs outer sleeves guide for more on double-sleeving setups.

Sleeve Size and Oversleeves

Oversleeves — sleeves placed over an art sleeve for extra protection — are also sized to standard or Japanese format. An oversleeve for a standard-size art sleeve must be a standard-size oversleeve. See our best oversleeves for art sleeves guide.

How to Confirm Sleeve Fit Before Buying

When buying sleeves for a TCG you haven’t sleeved before:

Check the sleeve package for a listed compatible game or card size. Most reputable brands list this explicitly.
Look at the sleeve brand’s website for a size chart. Major brands like Dragon Shield, KMC, Ultimate Guard, and Gamegenic publish explicit compatibility guides.
Order a small pack to test-fit before committing to multiple packs. Sleeve fit can vary slightly between brands even within the same category.
Measure your card if in doubt. A standard ruler gives you the card width and length in millimeters. Compare to the sleeve’s listed card dimensions.

Sleeve packaging dimensions are typically given as the inner dimensions of the sleeve opening — not the outer dimensions of the sleeve itself. A sleeve labeled 64mm × 89mm should fit a 63mm × 88mm card with a small, snug gap.

A Note on Protech Sizing

Protech Premium Matte sleeves are listed for standard-size cards and have been confirmed by players across MTG, Pokémon, Lorcana, and One Piece to fit correctly. Protech also states PVC-free polypropylene construction, which is relevant for long-term storage.

If you’re looking for a consistent standard-size sleeve for any of the games in this guide, Protech is a practical starting point.

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Who Should Read This?

Players new to TCG sleeving who need to know which sleeve size to buy
Players expanding to a second or third game and want to confirm their existing sleeve stock will work
Anyone who has received cards in an unfamiliar format and needs to figure out which sleeve fits

Bottom Line

Standard size covers the majority of popular Western TCGs: MTG, Pokémon, Lorcana, One Piece, and Flesh and Blood. Japanese size covers Yu-Gi-Oh! Always confirm the sleeve package’s listed compatibility before ordering, and test-fit a small pack before buying in bulk. Sleeve dimensions on the packaging are your most reliable reference — not the brand’s marketing category names.

Frequently Asked Questions

Will MTG sleeves fit Pokémon cards? Yes. MTG and Pokémon cards are both standard size. Any sleeve that fits one will fit the other.

Will MTG or Pokémon sleeves fit Yu-Gi-Oh! cards? No. Yu-Gi-Oh! cards are Japanese size and are narrower than standard-size cards. Standard sleeves will be visibly too wide.

Do all brands measure sleeves the same way? No, sleeve dimensions on packaging are not always measured identically. The listed dimensions are a guide, not a guarantee. When buying a new brand, test-fit one sleeve before committing to a full box.

Can I use the same sleeves for Lorcana and MTG in the same sleeve box? Yes. Standard-size sleeves work for both. If you’re sleeving both games’ cards in the same sleeve order, that’s fine — just buy standard size.

What if my card is slightly curved or warped? Will it still fit in a standard sleeve? Slightly warped cards usually still fit in standard sleeves. Severely bowed foils may be harder to sleeve without creasing. Gently flatten the card first — a common method is placing it face-down under a flat, heavy object overnight — before attempting to sleeve it.

Card Sleeve Size Guide: Standard vs Japanese for Every TCG