
The Story
The Cortex range is Ultimate Guard's everyday workhorse sleeve — precision-made, fully opaque and built for the daily grind, from kitchen-table games to in-store events. In matte red for players who like a bit of colour on the back of the deck.
At a glance
- 100 standard-size sleeves per pack
- Matte, fully opaque red backing
- Ultra-clear matte front
- Acid-free and PVC-free
Why it's good
- Superb shuffle feel for long sessions
- Durable enough for tournament play
A no-fuss sleeve that shuffles beautifully and hides your cards completely — exactly what you want under the lights.
The everyday sleeve that punches above its price. Match it with a deck case in the same colourway for a tidy set.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
The Cortex range is Ultimate Guard's everyday workhorse sleeve — precision-made, fully opaque and built for the daily grind, from kitchen-table games to in-store events. In matte red for players who like a bit of colour on the back of the deck.
At a glance
- 100 standard-size sleeves per pack
- Matte, fully opaque red backing
- Ultra-clear matte front
- Acid-free and PVC-free
Why it's good
- Superb shuffle feel for long sessions
- Durable enough for tournament play
A no-fuss sleeve that shuffles beautifully and hides your cards completely — exactly what you want under the lights.
The everyday sleeve that punches above its price. Match it with a deck case in the same colourway for a tidy set.













