Ultimate Guard Katana Inner Sleeves Japanese Size Transparent (100)
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100 Katana inner sleeves for Japanese-size cards
Precision fit seals out dust and moisture
Made in Japan — the first layer of double-sleeving
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Serious collectors double-sleeve, and inner sleeves are where that starts. These Katana Inner Sleeves slip snugly over Japanese-sized cards before you add an outer sleeve, sealing out dust and moisture for proper long-term protection. Made in Japan to Ultimate Guard's usual precision, they're the quiet first layer that keeps your Yu-Gi-Oh! and other small-format cards mint.
At a glance
100 inner sleeves for Japanese-sized cards
Sleeve size: 60 x 87.5 mm
Precision-fit for a clean double-sleeving experience
Made in Japan
Acid-free and PVC-free
Why they're good
Snug fit seals out dust and moisture from all sides
Impeccable clarity keeps cards fully readable
Built for a long lifespan under an outer sleeve
The invisible layer that turns good protection into proper, collector-grade protection.
The first layer every double-sleeved card needs. Pair with a set of Katana outer sleeves to complete the job.
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Ultimate Guard Katana Inner Sleeves Japanese Size Transparent (100)
Sale price£4.69
Regular price £4.99You saved6% OFF
Awaiting Stock
Out of stock
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Japanese — or small — size sleeves fit cards around 59 x 86mm: Yu-Gi-Oh, Japanese-print Pokémon, Cardfight!! Vanguard and most Japanese-language games. Standard Western cards from Magic, English Pokémon or Lorcana are larger and won't fit in these.
A main deck runs 40 to 60 cards, plus up to 15 each in the Extra and Side decks — so a complete build usually wants 60 to 90 sleeves. Buy a little over rather than exactly enough: sleeves split, and matching a part-used pack months later is a lottery.
Can I double-sleeve Japanese-size cards?
Yes, and it's common in Yu-Gi-Oh. A perfect-fit inner goes on the card, then a Japanese-size outer over the top. Worth knowing there's a second method too — a Japanese card in a perfect-fit inner, then a standard-size outer. That fits fine and opens up the much wider range of standard-size designs.
Will Japanese-size sleeved cards fit a standard deck box?
Yes — they're smaller than standard sleeved cards, so any box rated for standard sleeves takes them with room to spare. You'll have a little slack, which a couple of card dividers will tidy up.
