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Japanese Size Sleeves

For card collectors and players, protecting your cards is a top priority. So what should you think of when choosing sleeves for your trading card game collection? Besides choosing the right texture and design for your deck sleeves, there is another factor to consider: the size of the sleeves. There are two common sizes for collectible card games (CCG): standard size and Japanese size. Check out our guide to standard size sleeves, and learn more about Japanese - or mini size - sleeves here.
Japanese size sleeves are a popular choice for many, providing a perfect fit for specific trading card games (TCGs) and mini-sized cards. In this guide, we'll delve into everything you need to know about Japanese size card sleeves, helping you make an informed decision for your card protection needs.
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What does Japanese size refer to?

Japanese size sleeves refer to a specific sleeve dimension tailored to fit smaller trading cards commonly used in games from Japan. These sleeves ensure that your cards are well-protected and easy to handle during intense gaming sessions.

What is the difference between Japanese and mini size sleeves?

You might have stumbled over both Japanese and mini size sleeves in your search for the perfect protection. What is the difference? Well, there is in fact no difference. In the Western world, we call it Japanese size, referring to the fact that these sleeves typically fit the CCGs of Japanese origin, like Pokémon. But in Japan, the same size sleeve is called "Mini" sleeves.

What are the measurements (size) of Japanese size sleeves?

Japanese size card sleeves are made to fit cards that measure up to 59 x 86 mm (2 5/16" x 3 3/8"). This size is designed to provide a snug fit for smaller cards, ensuring they stay secure and protected without additional/extra bulk to interfere with the shuffle-feel.

What games fit Japanese size sleeves?

Japanese size sleeves are ideal for a variety of games that use smaller cards. Two of the most popular games that fit Japanese size sleeves are:
  • Yu-Gi-Oh!: Duel with confidence, knowing your cards are safe in sleeves designed specifically for their size.
  • Cardfight!! Vanguard: Keep your vanguard deck in pristine condition with perfectly fitting sleeves.

Why use Japanese size sleeves?

When you have a Japanese size deck - like a Yu-Gi-Oh! or Cardfight!! Vanguard collection - your best choice is to go for Japanese/mini size sleeves. Choosing sleeves of this size offers several benefits:
  • Precision fit: Japanese size sleeves provide a precise fit for your cards, preventing them from shifting within the sleeve, which can cause damage to the card. Sleeves this size keep the cards' condition pristine throughout many battles.
  • Optimal protection: These sleeves shield your cards from wear and tear, spills, and bending, keeping them in excellent condition.
  • Enhanced aesthetic: Besides their durability and protection, these sleeves allow you to personalize your decks. Check out our wide selection of Japanese size sleeves or design your very own, customized deck with the Sleeve Crafter.
  • Easy handling: Japanese size sleeves make it easier to handle, shuffle, and play with your cards, ensuring a smooth gaming experience. This is in large part due to the texture of the sleeves.

How to choose the right standard size sleeve

When selecting standard size card sleeves, consider the following factors:
  • Material: Dragon Shield sleeves are all made of durable materials like polypropylene to offer a balance of protection and flexibility. We value high-quality and durability in our sleeves and strive to provide the best options for you.
  • Thickness: It makes sense that thicker sleeves provide better protection, but they also make your deck feel bulky. Choose a thickness that suits your gaming needs. Most of our Japanese size sleeves are 120 micron per layer, meaning 240 micron in total. The same thickness applies to our outer sleeves while our inner sleeves are typically thinner. You can combine each layer to protect your deck - learn all about double- and triple-sleeving in our guide.

Are there other sizes and what are they?

There are several sizes when it comes to card protection, but for CCGs, the most common types are Japanese- (or mini-) and standard size sleeves. If you are an avid board game player, you can learn more about protecting your favorite board game cards in our guide to board game sleeves.
So what are standard size sleeves? Standard size sleeves are popular everywhere you go. The cards that fit Standard size sleeves are slightly larger than Japanese sized TCGs - standard size cards typically measure up to 63 x 88 mm. If you enjoy playing Magic: the Gathering, Lorcana, Flesh and Blood, Grand Archive, or Pokémon, the cards used for these games are perfectly tailored to fit.


Japanese size sleeves are an essential accessory for any trading card enthusiast with a penchant for CCGs originating in Japan. They offer unparalleled protection, preserve the value of your cards, and enhance your gaming experience. Whether you're dueling in Yu-Gi-Oh!, commanding your vanguard, or collecting anime-themed cards, the right sleeves ensure your cards remain in great condition. Explore the wide range of options available and choose the perfect Japanese size sleeves to guard your treasured collection. Happy gaming and may your cards be ever in mint condition!