What is the A4 High-Transparency 30-Hole Trading Card Refill (5-Pack)?
If you collect trading cards — whether that's Pokémon, Yu-Gi-Oh!, or K-POP idol cards — proper display and storage is everything. Daiso's A4 高透明リフィール 30穴 トレカ用 (High-Transparency Refill Sheets for Trading Cards) delivers exactly that, and for just ¥110 you get five full sheets.
Made from polypropylene, each sheet measures 24.1 cm × 30.4 cm with an ultra-thin 0.012 cm wall thickness — the material that makes the "high-transparency" claim real. Cards are visible with pin-sharp clarity through the pockets, with no yellowing or hazy film to dim your prized pulls. The sheets are designed primarily for standard-size trading cards, but they also accommodate smaller card formats, meaning your K-POP album photocards and TCG mini-cards all fit snugly without rattling around.
Compatibility is a standout feature. The sheets are officially rated for 30-hole binders, but they also punch in for 2-hole and 4-hole binders — so you're not locked into one specific album format. That's a rare level of flexibility at this price point. Each refill sheet slots straight into any standard A4 binder, making it easy to build a custom, expandable collection album exactly the way you want it. Five sheets per pack means you're covering a solid chunk of your collection for less than the price of a single convenience-store coffee.
Source: daisonet.com
How to Use It — Hack Ideas
Primary Use: Trading Card Collection Display
Slot your sleeved or un-sleeved trading cards into the pockets and slide the sheet into a 30-hole (or 2/4-hole) A4 binder. The high-transparency polypropylene lets you admire artwork and foil finishes from both sides — no need to remove cards every time you want a good look. Collectors using Daiso's own card sleeves report a snug fit even with a sleeve on, keeping cards scratch-free.
Hack #1: K-POP & Idol Goods "Lookbook" Binder
The pockets aren't just for TCG cards. Standard K-POP album photocards fit perfectly, and fan community members have found that small bromides, sticker sheets, and even folded polaroid-style prints slip right in. Build a themed "lookbook" binder for each artist — it's a display album that doubles as a portable portfolio you can show off at fan meets.
Hack #2: Business Card & Sticker Catalog
Running a small craft business or collecting designer stickers? These pockets are sized just right to organize sample business cards or small sticker sheets into a tidy, page-by-page catalog. Pop it into an A4 clip binder and you've got a professional-looking presentation book for client meetings — built entirely from Daiso supplies.
Reviews & Verdict
Community sentiment around these sheets is overwhelmingly positive within the oshi-katsu (idol fan activity) and TCG collector space. The clarity of the polypropylene consistently earns praise — users note that even holographic card finishes and foil photocards remain vivid and undistorted through the pockets. That "crystal window" quality is what separates these from cheaper, hazier alternatives.
Fans also appreciate the multi-hole compatibility. Being able to use the same refill sheet across different binders — 30-hole, 4-hole, or 2-hole — means you can mix and match without buying new sheets. Several reviewers recommend pairing them with Daiso's A4 4-ring binder for the most stable card display experience.
The one caveat worth noting: at five sheets per pack, heavy collectors will want to buy multiple packs in a single trip. With nine card pockets per sheet, five sheets hold up to 45 cards — a good starter set, but serious collectors building full sets will burn through packs quickly. At ¥110 per five-pack, stocking up is still extremely economical. Overall, this is a staple pick for anyone who takes their card collection seriously.
Value Score: 88/100
Near-flawless transparency, genuine multi-binder compatibility, and a collector-friendly price point make these an easy recommendation — the only reason it doesn't crack the top tier is the modest five-sheet count per pack, which means frequent restocking for active collectors. Great value, worth every yen.
