If you've ever ordered sleeves that were too tight, too loose, or left an ugly gap around your bias, you already know: photocard size is the single most important thing to get right before you buy anything to protect your collection. This guide gives you the exact dimensions of K-pop photocards, a quick-reference size chart, and — most importantly — which sleeve size to pick for a perfect, snug fit.
What size is a standard K-pop photocard?
The vast majority of K-pop photocards measure about 55 × 85 mm (roughly 2.16 × 3.35 inches) — almost identical to a standard credit card. If you pull a photocard from a BTS, Stray Kids, SEVENTEEN, or NewJeans album, this is the size you're holding the overwhelming majority of the time.
That said, "standard" isn't the only size you'll run into. Special editions, Japanese releases, lucky-draw cards, and merch cards come in a range of dimensions, which is exactly why sleeve sizing trips people up.
Photocard size chart (and the sleeve that fits)
| Card type | Approx. card size | Recommended sleeve | Notes |
|---|---|---|---|
| Standard photocard | 55 × 85 mm | 57 × 88 mm (tight) or 61 × 91 mm (relaxed) | Most album pulls |
| Slightly oversized | 56–59 × 86–89 mm | 59 × 88 mm / 61 × 91 mm | Some JP albums, special editions |
| Mini / ID size | ~45–53 × 70–80 mm | 38 × 48 mm / smaller IDs | Mini cards, ID photos |
| Postcard / large | up to ~102 × 152 mm | 103 × 153 mm postcard sleeves | Postcards, large prints |
| Lomo / small | ~52 × 78 mm | 57 × 88 mm | Lomo card sets |
Rule of thumb: you want 1–2 mm of margin on each side — snug enough that the card doesn't slide around, loose enough that it slips in without bending corners.
The two sizes that matter most: 57×88 vs 61×91
These are the two sizes 90% of collectors actually buy, so it's worth understanding the difference:
- 57 × 88 mm — the "tight" fit. Hugs a standard 55 × 85 mm card with minimal edge. This is the cleanest look for display and the most popular single-sleeve choice. Shop 57×88 clear sleeves →
- 61 × 91 mm — the "relaxed" / double-sleeve fit. A little more room. It's the go-to outer sleeve when you want to double-sleeve, and it's also the size that fits most binder pages. Shop 61×91 sleeves →
If you only remember one thing: 57×88 to hug, 61×91 to double-sleeve or bind.
What is double-sleeving, and what sizes do I need?
Double-sleeving means putting an already-sleeved card into a second, slightly larger sleeve for extra protection — ideal for rare pulls, thinner cards, or anything you're shipping or trading.
The classic combo:
- Inner sleeve: 57 × 88 mm (snug around the card)
- Outer sleeve: 61 × 91 mm (fits over the inner sleeve)
This gives a super-snug stack with no rattle and the best visual finish. For thicker protection, add a toploader on the outside for trades and transport.
Matching size to how you store your cards
Your storage method changes which size you should buy:
- In a binder? Use 61 × 91 mm sleeves with binder pages — they're sized for this.
- On display? Holographic and colored sleeves in 57×88 or 58×89 make cards pop on a shelf.
- Trading or shipping? Double-sleeve, then toploader.
Does sleeve thickness matter?
Yes — thickness (measured in microns) affects feel and protection:
- 100 microns — standard, flexible, great for everyday storage and binders.
- 120 microns — a bit sturdier; nice for frequently handled cards.
- 160 microns — premium rigidity for your most valued pulls.
All of our sleeves are PVC-free and acid-free, so they won't yellow or damage your cards over time — a detail cheap sleeves often skip.
Quick answers (FAQ)
What size are most kpop photocards?
About 55 × 85 mm — the same footprint as a credit card.
What size sleeves do I need for kpop photocards?
57 × 88 mm for a tight single-sleeve fit, or 61 × 91 mm for a relaxed fit, double-sleeving, or binder use.
What's the best size for double-sleeving?
57 × 88 mm inner + 61 × 91 mm outer.
Why do my sleeves look cloudy or yellow?
Usually low-quality PVC sleeves. Switch to PVC-free, acid-free sleeves to keep cards crystal clear long-term.
What sleeves fit in a binder?
61 × 91 mm sleeves pair with standard binder pages; check your binder pages for the exact pocket size.
Find your perfect fit
Now that you know your card's size, the rest is easy. Start with the Standard Clear Sleeves (57×88) for everyday protection, add holographic sleeves for display, and grab binder pages when you're ready to organize the whole collection.
Crafted with love in Seoul and Shenzhen — PVC-free, acid-free, and sized for collectors who care about the details.
