Thank you so much for this new edition. I love it 💜
![[PRE-SALE] A4 myUNIVERSE Binder - Part II - Duo Edition](http://ultbias.us/cdn/shop/files/a4-myuniverse-binder-part-ii-duo-804846.jpg?v=1736563896&width=2000)
[PRE-SALE] A4 myUNIVERSE Binder - Part II - Duo Edition
Discover the ULTBIAS difference
Description
This product is available for pre-sale and is currently on the way to our warehouse. The estimated delivery date is 23 October 2026.
Sold out with every restock, the myUNIVERSE Part II collection was first introduced in 2025 and tenderly builds upon the story that began with the original. The iconic photocard window remains, now crowned with celestial hand-illustrations that feel like a world quietly blooming into view: a next chapter, and a quiet expansion of the world ARMY had come to cherish.
About Duo Edition - A4 myCOLLECTION Binders
The Duo Edition is a 2-in-1 binder system for collectors who want maximum storage space without compromising on utility, protection or design. An ULTBIAS original solution, it comes with two individual custom A4 ring binders stored together in one shared outer case.
The Duo Edition is one of three sizes available in our Custom A4 myCOLLECTION Binder range. It offers the most photocard storage and can fit a total of x90 single-sided sheets of our Custom A4 9-Pocket Photocard Pages, which holds up to 810 photocards across both binders.
Each custom A4 4-D ring binder included is constructed with tough premium board core and equipped with a dual magnet clasp. This enclosure keeps the contents safe and gives the binder its signature box-like structure to ensure it can be stored standing without collapsing. The protective Binder Shield™ prevents pages from sagging when stored upright, supported by custom-engineered reinforced rings that can withstand up to 2kg of weight. Designed for everyday handling, the spine eyelet together with the ventilated holes on the outer case makes it effortless to quickly access and shelf your binder in one quick wobble-free motion.
With no fixed pages, tailor your binder to fit the exact needs of your collection with the flexibility to adapt and change your set up at any time. For the best fit and alignment, choose our archival-safe Custom A4 Pocket Pages.
Care Note
To preserve our myCOLLECTION binders, store away from direct sunlight in a cool, dark space.
Key Features
- Original Artist-Illustrated Designs: No AI-generated designs. All artwork featured on our binders supports artist-original designs.
- Built for Every Collection: Unlike zip binders and collectbooks, our ring binders offer true flexibility with no fixed pages to ensure you can tailor storage to fit the exact needs of your kpop collection.
- Sturdy and Structurally Sound: Crafted using thick rigid premium greyboard exclusively sourced from Taiwan. While ordinary binders bend and warp under pressure, our binders remain perfectly rigid.
- Strong Clasp Closure: The dual system ensures your binder snaps securely shut every time and gives the binder it's stable, signature box-like shape so it won't collapse when stored standing.
- Tough & Resilient Rings: Fitted with custom-engineered reinforced rings with a weight tolerance of 2KG, designed to remain aligned and resilient over long-term use.
- Binder Shield™ Protection: Exclusively developed for ULTBIAS, the metal mechanism locks your pages in place to prevent sag and drag when storing your binder upright.
- Ventilation Holes for Easy Handling: Paired with the spine eyelet, the custom openings make it effortless to quickly access and shelf your binder in one quick wobble-free motion.
- Page Protection with Backboards: Our slim yet backboards placed at the front and back of the binder rings shields pages from scratches/dents.
- Premium Outer Case: Solid and opaque case that keeps light, dust and accidental knocks at bay keeping your collection extra protected.
- Ready for Organization Upon Opening: A set of thick full-page Index Tabs help with sorting and categorising pages in your binder.
- Tested for Long-Term Use: Developed by fellow collectors, our binders have been tested rigourously to deliver long-term protection across years of daily use.
Specification
What's Included
A4 Binder Order Limit
Due to the large size of our binders, an order limit has been enforced to ensure your binder(s) arrive safely:
- 2x Single - A4 myCOLLECTION Binders PER ORDER
- 1x Duo Edition - A4 myCOLLECTION Binder PER ORDER
These limits apply to the binders only and pocket pages can still be added to your order.
[PRE-SALE] A4 myUNIVERSE Binder - Part II - Duo Edition
Sale price$129.95
Regular price (/)
The best decision I’ve made
"I’m a novice collector that let a lot of my postcards and photo cards pile up in some box, but keep them in these binders are the best decision/purchase I’ve made. The binders a beautiful and they’re excellent quality, I no longer worry about my collection being damaged in the box I kept them in anymore. I just love to flip through them! Would recommend these binders to anyone who loves to collect!"
★★★★★
Natalee F.
Why myCOLLECTION is made like no other
Made to safely hold more
Big collections shouldn’t require making big compromises. Our Single A4 binder has been carefully optimized to fit up to 405 photocards while staying sturdy, protective and easy to use, so you get the most storage possible without it becoming too heavy to handle or flimsy to trust.
Made to fit everything
From posters to sticker sheets, kpop collections go well beyond photocards. Unlike zip binders or collect books, our binders have no fixed pages to give you true flexibility to store and organize everything your collection may include. With over ten available Custom A4 Pocket Pages to choose from, there's a home for every odd inclusion.
Made for lasting protection
Generic office folders weren’t made for collecting. Our binders are engineered inside out for complete long-term protection, beginning with premium materials and finishing with our protective binder accessories included with every binder.
Single Vs Duo Edition
Find the right binder for your collection. Discover the difference between our two signature sizes: Single and Duo Edition.
Shop Single
Single
Fits up to x45 single-sided sheets of our Custom A4 9-Pocket Photocard Pages, which can hold up to 405 kpop photocards in total.
Duo Edition
An ULTBIAS original 2-in-1 binder system. It comes with two Single A4 binders stored together in one shared outer case.
Fits up to x90 single-sided sheets of our Custom A4 9-Pocket Photocard Pages, which can hold up to 810 kpop photocards in total.
Single
Best-Selling Size
Duo Edition
2-in-1 Binder Set
Up to 405 photocards
Photocard Storage
Up to 810 photocards
Up to 45 sheets
Page Capacity
Up to 90 sheets
11.8 x 13.8 x 5.5 in
Binder Dimensions
11.8 x 13.8 x 5.5 in
12 x 14 x 3 in
Outer Case
12 x 14.2 x 5.5 in
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NEW OFFER
Add Pages & Save
Save 25% off each pack of Custom A4 Pocket Pages with the purchase of your A4 binder.
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Customer Reviews
Overall rating: 5.0 / 5 from 26 reviews.
This is my second A4 duo binder and I love how this product has evolved. The attention to detail is really nice and it makes it a joy to collect and organize my photocards.
So perfect for Army!! 💜
They're HUGE, sturdy, and beautiful! Unfortunately the nice purple surface stretched or caught in a few places and the white paper underneath is showing so it looks kinda like torn paper on some corners and edges, which is disappointing considering the price point. Really appreciated the purple photocard sleeves freebies they threw in!
Loved it
OMG! I’m in love, can’t wait to have these for many years. Work perfectly for my whole collection!
The color is so pretty and I love the photocard slot!
Nice and organized all my Jk related stuff.
I love this binder so much! While it doesn't hold as many pages/photocards as the first edition of the A4 that I have (that one held 55 versus now 45, but you can get it to 50 pages with double-sleeved photocards and the A4 V3 pages, and it will still close), it's still so great. It was my first time getting a duo binder, and it's very high-quality, like all of the other ultbias products I have. My only gripe is that because of the way the color lies (seems like a wrap) on the outer box, you can see the seam on the top and bottom of the middle part of the box that separates the two binders in the duo. You have to constantly flatten down the edge so there isn't a white blob where the wrap connects. Other than that it's perfect. I'm so happy to be able to upgrade my huge BTS collection into this. I just hope ultbias makes more A4s! I'm ready for new colors and not just the black and white :)
I love my new binder
shipped really fast and came with pages for BOTH binders! i even got free purple sleeves to go with the binder!!!
what a perfect set of binders to embody my love for bts!! i’m so excited to move my collection to these binders!! 💜
Excellent service, everything arrived perfectly and it is beautiful and very good quality. Thank you
even prettier in person! I love the magnetic closer and the filing inserts as well. It’s perfect!! Being able to display your favorite in the front is the best!
Beautiful binder, the quality is amazing!! I'm so excited to store my collection inside 💜
Experience 10/10 very good.
Wonderfully designed and well built! It's perfect for my BTS collection and looks great next to my other A4 binder sets! Money well spent; it was worth the 6-month wait, since I had preordered it. Thank you again so much for making this binder set. It's perfect!! 💜💜💜
The duo binders are so gorgeous!! I'm very excited to house my collection in them and see it grow to fill them up. If you double-sleeve your cards, one binder can hold 50 pages & still close. I know the listing says 45 but I tried with my collection, and 50 still fit well. I'm looking forward to more A4 designs being released so I can get binders for my other non-BTS collections.
Came well protected and complete, very satisfied with my first purchase.
Love it!!!
So big and so beautiful!
Soooo much bigger in person and absolutely gorgeous
Can't wait to move my collection to these new binders!! They are gorgeous and so happy with them!!
The way it encapsulates the love for BTS. I love it.!
I love this binder duo! I’m excited to rehome my BTS collection
This was my first purchase with ULTBIAS after following in 2020, and im so incredibly impressed with the quality of the product and how beautiful the packaging it was sent in. The A4 bingers are huge and perfect for my BTS pc collection 💜