A simple guide for protecting your MTG cards the right way

If you play Magic: The Gathering, you need standard size card sleeves.

Magic cards are the same general size as most standard trading cards, which means they fit sleeves made for standard size cards. The most common sleeve size used for MTG is around 66mm x 91mm, which gives your cards enough room to slide in safely while staying snug enough for gameplay.

That is the simple answer.

But if you are new to Magic, Commander, or card protection in general, there are a few things worth knowing before you grab the first pack of sleeves you see.

Why sleeve size matters

Sleeves are not just there to make your deck look nice. They help protect your cards from the things that happen during normal play.

Every time you shuffle, draw, tap, trade, or move your deck across a table, your cards are picking up wear. Over time, unsleeved cards can get scratched, bent, stained, or marked around the edges.

That matters for a few reasons.

First, Magic cards can hold real value. Some cards are worth a few cents, while others can be worth much more. Even if your deck is not expensive, it still took time, money, and effort to build.

Second, damaged cards can become harder to play with. If a card is bent, dirty, or visibly marked, it can stand out from the rest of the deck.

Third, sleeves make gameplay feel better. A good sleeve makes shuffling smoother, keeps your deck cleaner, and helps your cards last longer.

The right sleeve size gives your cards protection without making the deck feel bulky, loose, or awkward to handle.

What size are Magic cards?

Magic: The Gathering cards are standard trading card size.

A regular Magic card is approximately:

63mm x 88mm

Because of that, most MTG players use standard size sleeves, which are usually around:

66mm x 91mm

That extra space gives the card room to fit inside the sleeve without being too tight. A sleeve should not squeeze the card, bend the corners, or leave the card sliding around too much.

A proper fitting sleeve should feel secure, clean, and easy to shuffle.

What kind of sleeves should you use for MTG?

For most players, the best option is a standard size matte sleeve.

Matte sleeves are popular because they usually feel better during shuffling and are easier to handle during gameplay. They also tend to reduce glare compared to glossy sleeves, which can make your cards easier to see across the table.

For casual Magic, Commander, local game nights, and regular play, you want sleeves that focus on three things:

1. Fit: The sleeve should fit standard size Magic cards without being too tight or too loose.

2. Durability: The sleeve should hold up through repeated shuffling, deck building, and regular gameplay.

3. Shuffle feel: The sleeve should feel smooth enough to shuffle without sticking, slipping too much, or making your deck feel clunky.

That is where a good sleeve makes a real difference. You are not just protecting the card. You are improving the way your deck feels every time you play.

Are all card sleeves the same size?

No. This is where beginners can get confused.

There are different sleeve sizes for different card games and card types. Some games use smaller cards. Some sleeves are made for Japanese size cards. Some are made for board games. Some are inner sleeves, also called perfect fit sleeves.

For Magic: The Gathering, you want standard size sleeves.

If a sleeve says it is made for standard trading cards, standard cards, MTG cards, Pokemon cards, or sports card size cards, it is usually the right general size.

If a sleeve says Japanese size, mini size, or board game size, it is probably not what you want for Magic cards.

What about perfect fit sleeves?

Perfect fit sleeves are inner sleeves. They fit closer to the card and are usually used for double sleeving.

Double sleeving means placing the card inside a perfect fit sleeve first, then placing that sleeved card into a regular outer sleeve. This gives the card extra protection from dust, moisture, and table wear.

You do not have to double sleeve every deck. Many casual players single sleeve their decks and are completely fine.

But if you have expensive cards, foils, sentimental cards, or a deck you play constantly, double sleeving can be worth it.

The simple setup looks like this:

1. Perfect fit sleeve first

2. Then, Standard size outer sleeve

For most MTG players, outer sleeves are the main thing you need to start.

How do I know if my sleeves fit correctly?

A good MTG sleeve should check a few boxes.

• Your card should slide in without forcing it.

• The sleeve should cover the full card.

• The corners should not bend when you insert the card.

• The card should not move around too much inside the sleeve.

• The deck should feel comfortable to shuffle.

If the sleeve feels too tight, it can damage the card when you insert it. If it feels too loose, the card can shift around too much during play.

The best fit is secure, smooth, and consistent.

How many sleeves do you need for a Magic deck?

That depends on the format you play.

A regular constructed deck usually needs at least 60 sleeves, plus extras for sideboard cards.

A Commander deck needs 100 sleeves because Commander decks have 100 cards.

That is why many Commander players prefer packs that include more than exactly 100 sleeves. Extra sleeves are helpful if one gets damaged, if you use tokens, or if you want replacement sleeves that match the rest of your deck.

Nothing is worse than having one sleeve split and realizing you do not have a matching replacement.

Why Commander players should care about sleeve count

Commander is one of the most popular ways to play Magic, and it creates a very specific sleeve problem.

A Commander deck has exactly 100 cards, including your commander. If your sleeve pack only gives you 100 sleeves, there is no room for mistakes.

If one sleeve splits, gets dirty, bends, or goes missing, you may have to replace the whole deck with new sleeves just to keep everything matching.

That is why 100 plus sleeves per pack is helpful. It gives you enough for the full deck and a few extras for real life.

• Because cards get played.

• Sleeves get shuffled.

• Tables get messy.

• Game nights get chaotic.

• Having extras is not just convenient. It is practical.

Should you sleeve cheap cards too?

Yes, especially if they are in a deck you play.

A card does not have to be expensive to be worth protecting. If it is part of your deck, it matters. Sleeves keep the whole deck consistent, easier to shuffle, and safer during gameplay.

Also, card value can change over time. A card that feels cheap today might become harder to find or more expensive later.

But even beyond value, sleeving your deck makes the game feel better. A sleeved deck is easier to handle, cleaner to play with, and more durable over time.

What should beginners look for in MTG sleeves?

If you are buying sleeves for the first time, keep it simple.

• Look for standard size sleeves.

• Choose a color you like.

• Make sure the pack has enough sleeves for your deck.

• Pick sleeves that feel good to shuffle.

• Avoid sleeves that feel too thin, too slippery, or too easy to split.

• For Commander, make sure you have at least 100 sleeves, and preferably a few extras.

A good sleeve should help your deck feel ready for play, whether you are at home, at a local game store, or sitting down for a long Commander night with friends.

Tame Dog Sentry Sleeves are made for standard size cards

Tame Dog Sentry Sleeves are designed for players who want to protect smarter and play longer.

They are made for standard size cards like Magic: The Gathering cards and are built with regular gameplay in mind. That means a comfortable fit, a great shuffle feel, and 100 plus sleeves per pack so Commander players are covered with room for extras.

Tame Dog is also a small company by players and for players, and a portion of profits helps animal shelters in Colorado.

So when you sleeve up your deck, you are not just protecting your cards. You are helping pets get a better chance too.

Final answer

Magic: The Gathering cards use standard size sleeves. The most common sleeve size for MTG is around 66mm x 91mm, made to fit cards that are approximately 63mm x 88mm.

If you are playing Commander, make sure you have at least 100 sleeves, plus extras if possible.

The right sleeves should fit well, shuffle smoothly, and hold up through regular play.

Protect smarter. Play longer.