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These binders are beautiful, and the A4 size is perfect for my OT8 sets. When you bias a pretty group, its best to have a pretty way to store them!
[PRE-ORDER] Part I - Astro + Wanderlust - Midnight Duo Edition - A4 myCOLLECTION Binder
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[PRE-SALE] Part I - Astro + Wanderlust - Midnight Duo Edition - A4 myCOLLECTION Binder
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.
Astro & Wanderlust - Part I is where the story begins. In Astro, ever-shifting moon phases trace a new celestial rhythm, guiding the journey forward. In Wanderlust, the bunny once dreaming now takes flight, hope and courage carrying it beyond the familiar. Together, they form a world of soft magic, where discovery feels as meaningful as the destination.
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] Part I - Astro + Wanderlust - Midnight Duo Edition - A4 myCOLLECTION Binder
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
Also available in Duo Edition
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A4
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ORIGINAL LICENSED
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A4
DUO
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PRE-SALE
A4
DUO
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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 94 reviews.
well worth the price. the packaging was superb and everything arrived in pristine condition. can't wait to fill these up!!
Part I - Astro + Wanderlust - Midnight Duo Edition - A4 myCOLLECTION Binder
The quality of these binders is impressive. They are sturdy and beautiful. The magnetic close is great and exactly what I look for in a binder to safely house my collection.
Part I - Astro + Wanderlust - Midnight Duo Edition - A4 myCOLLECTION Binder
My favorite design so far! Not 5 stars because it’s different in size from the original production. The binder itself is slimmer and as a whole it’s a tiny bit wider so it sticks out when put next to the original.
[PRE-ORDER] Part I - Astro + Wanderlust - Dream Duo Edition - A4 myCOLLECTION Binder
This binder is so beautiful and such great quality!! I can't wait to put my Monsta X collection in it! It's
Part I - Astro + Wanderlust - Dream Duo Edition - A4 myCOLLECTION Binder
My favorite A4 binder! The design is beautiful and the quality of the binder is amazing. I’m sure that it will protect my photocards for a long time!
Quality is unmatched! The design is simply beautiful. I store all of my Twice Strategy Pobs in the 2 binders. I am very pleased with my order, and I am hoping to order more in the future!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Love the holo on the binder!!!! It really adds a pop of color when the light hits it just right!!!
LOVE LOVE LOVE THESE BINDERS!!!! I love knowing that my collection is not only well protected but also so dreamy to put up on display. Family even thought they were custom books!!!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Honestly such a stunning binder! Very sturdy and just looks and feels Expensive! Helps me feel Extra Safe about storing my collection!
the most beautiful A4 binders ever! I absolutely love this version so so much! They were my very first binder purchase ever for my kpop collection.
Not the type to write reviews, but simply wanted to share my experience having these binders for a while and I must say they are fantastic! Quite literally they are one of a kind, what I've been looking for! Gorgeous design, everything is so well thought out, every other A4 binder I have seen on the market does not come close and let me tell you why. For the price it is worth the protection that outer case has provided me! Not only are the binders really sturdy themselves but that outer case? Actually saved the binders from getting water damage, the kind that comes from my lovely pet cat. The amount of relief and peace of mind that my collection didn't suffer was immense. Because I can't imagine having to deal with getting out the smell if it got on my pages. Add on to that, I even checked the inside lining to see if the water staining got through and . . it didn't? Surprise, it's just that high-quality! All that outer water damage stayed out! I take pride in making sure my collection stays safe, perfect, and clean but things happen, mistakes get made. I'm just super happy I took a chance on getting this because it's genuinely worth the price. It protected my collection <3 in a way I never thought could happen.
The product came as described and the quality is amazing! It's the best binder I've ever owned! Thank you so much!
Very very pleased! Super cool that you can put them in either order and the spine design still connects. The cost is well worth the quality
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Unboxing this binder felt like I was unboxing Chanel or Hermes. Love love love holographic design. It is very well made and probably could be used in self defense 😅 I can’t wait to fill it up with my collection.
I LOVE these binders!! I got one for each of my Ult groups and am waiting for it to come back in stock so I can fill it more. Great quality!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Good size and amazing design! Love the functionality.
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
My favorite purchase!! My collection is save thanks to this 🩷
The binder is everything and more they advertised it as. It’s so well made and feels luxurious and it’s so aesthetically pleasing. I know that my collectibles are well protected (super important) and it actually makes me reach for it more often, just so I could look at them. Price could be a little bit intimidating but it’s worth it.
Loved the first one, so I had to buy another one! Also bought more of the premium + and nova slim sleeves and the all in one pack pocket pages. Thank you for the freebies.
High quality, bigger than I was expecting but my collection looks amazing now and I know it’s secure and being stored safely. Would definitely recommend and purchase again!
Gorgeous display box and adorable prints on the binder. Absolutely adore it. Large and can hold lots of pages as well!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Fantastic
This is absolutely gorgeous! I can’t wait to get my Ateez collection moved into such beautiful binders!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
I love this set so much! The materials are top quality and they look so pretty on my shelf
Binder arrived in perfect condition and well packed. Seller included freebies!!! Thank you so much!!! I cannot wait for my daughter to see what she got for Christmas <3
Very high quality product. It came packaged very securely, so nothing was damaged upon delivery. It also shipped and arrived very fast. The inclusion of the back boards and pin to hold pages in place are a nice addition! The details on the binder and case are stunning! I’m so glad I bought this. It’ll be perfect for storing my ever growing collection.
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Beautiful product! And seller included some free colored sleeves, which were amazing.
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Beautiful! Very well made! Can’t wait to set up my collection in these binders!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
The albums are beautiful and very sturdy! I may move my some of my A5 Prism Platinum collections to this beautiful A4 binder, Cathy! :)
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
High quality!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Love it!
Love the binders, so pretty and very sturdy.
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
This is seriously an amazing design - I love how pretty it looks in my space, and how sturdy it is on top of the look!
its gooood
Originally ordered a single binder as you can see but loved it so much I absolutely had to get the double pack as I expanded my collection!
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Really love the design. I’ll be ordering the black binder as well.
I love these binders and I can't wait for more designs and colors to come out in the future and I love the slip covers
I love these, these are able to be stored from getting dust on them. Also the designs are so cute
Duo Edition – Astro + Wanderlust – Version 1 – Midnight Black
Another wonderful purchase that I am in love with!! I keep coming back. This was my 5th Binder purchase from Prism Platinum! And I will.be back for more!