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.
