Cortex Sleeves

Product information "Cortex Sleeves"

Ultimate Guard CORTEX sleeves are a perfect choice for all TCG brain athletes! Designed for your daily use, Ultimate Guard CORTEX sleeves combine precision engineering and high-quality materials with an additional focus on value. Meant as an everyday sleeve, Ultimate Guard CORTEX sleeves offer an attractive price point and also feature fully opaque backing, a perfect shuffle feel, and high-quality durability for those long gaming sessions. Ultimate Guard CORTEX sleeves will be your ideal companion, built to endure the daily grind – from kitchen table play to in-store play, and even demanding events.

Size: Standard
UG Feature: Acid free: Acid free, no PVC
UG Feature: Clearness: Extra high clearness
UG Feature: Durability: Extra long lifespan and durability
UG Feature: Material: Extra high opacity
UG Feature: Standouts: Perfect shuffling
Weight (g): 136, 144



The Cortex sleeves combine precision engineering and quality materials with focus on value.

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Acid free, no PVC
Extra high clearness
Extra long lifespan and durability
Extra high opacity
Perfect shuffling


While our Ultimate Guard Katana sleeves are the best of the best we can produce, the Ultimate Guard Cortex sleeves are a good alternative at an attractive price point. We have used all our know-how to develop the perfect everyday sleeve for you. The result is a long-lasting sleeve with a very good shuffle-feel.

The difference is simply in the surface finish of the front of our sleeves. Glossy is the standard finishing of our and other sleeves on the market. Glossy has the advantage that it does not distort the colors of the card and you always have an unaltered view of the artwork on your cards. However, it has the disadvantage that the sleeves can tend to reflect in bright environments. With the matte finish you don't have this problem, but the colors may not look as brilliant.

You can be sure that we're already working on bringing new colors to the market.

We make sure our sleeves have a fully opaque back side. The purpose is to avoid any chance of cheating in a tournament.

Which sleeves you need depends on the TCG you play. For example, Magic: The Gathering and Pokémon cards are the same size, so you can use our standard size sleeves. However, if you want to protect your Yu-Gi-Oh cards, Japanese size sleeves should be your choice.

For now, we have no plans to launch other sizes, but never say never.

We wanted to provide high-quality sleeves, that won't break the bank, but also won't break the first time you use them. Great shuffle-feel, extreme durability, remarkable opacity - all at great value.

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