![Customer photo review of [PRE-ORDER] Part I - Astro + Wanderlust - Midnight Duo Edition - A4 myCOLLECTION Binder](http://images.loox.io/uploads/2026/5/7/jpyyJ0I5z_mid.jpg)
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
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_Duo_Hero.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_A_Front.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_A_Back.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_W_Front.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_W_Back.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_Interchangeable_1.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_Interchangeable_2.jpg?v=1791324381&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_Astro_Wanderlust_PtIII_Square_JPG_Listing_Purple_Case_In.jpg?v=1783864030&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_Astro_Wanderlust_PtIII_Square_JPG_Listing_Purple_Case_Out.jpg?v=1783864030&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_Astro_Wanderlust_PtIII_Square_JPG_Listing_Purple_Magnetic.jpg?v=1783864030&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_Astro_Wanderlust_PtIII_Square_JPG_Listing_Purple_Rings.jpg?v=1783864030&width=3000)
![[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_Astro_Wanderlust_PtIII_Square_JPG_Listing_Purple_Pages.jpg?v=1783864030&width=3000)
[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder
This is a pre-order product that is currently not in stock and will be made to order. The expected delivery date is February 2027. Learn more here.
Discover the ULTBIAS difference
Description
This is a pre-order product that is currently not in stock and will be made to order. As of October 2026, the expected delivery date is February 2027.
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
- Strong and Structurally Sound: Crafted with 2300gsm board core using premium greyboard exclusively sourced from Taiwan that makes it up to 50% denser than standard office binders. While ordinary binders bend and warp when full, the myCOLLECTION Binder stays perfectly rigid.
- Dual Magnet Closure: Unlike zippers or weak single magnets, the dual system ensures your binder remains securely shut every time and gives the binder it's stable, signature box-like shape so it won't collapse when stored standing.
- Reinforced Rings That Last: Fitted with custom-engineered reinforced rings with a weight tolerance of 2KG, designed to stay aligned and resilient especially as your collection grows.
- Binder Shield™ Protection: Exclusively developed for ULTBIAS, the metal mechanism locks your pages in place to protect against page wear caused by sagging pages to make our binders completely safe to store standing.
- 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, especially practical as your binder gets heavy.
- Page Protection with Backboards: A set of rigid and slim full-page backboards placed at the front and back of the binder rings help protect against scratches/dents to pages near the spine of the binder rings.
- Premium Outer Case: Made of high quality core board sourced from Taiwan, the solid and opaque case not keeps light, dust and accidental knocks at bay but care has been taken to ensure a clean, bright edge around every cut-out, so collectors see a refined, polished look instead of the dull grey edges of mass-market binders.
- Ready for Organization: Full-Page Index TabsThick, full-page separators to aid in sorting and categorizing pages in your binder.
- Built for Every Collection: With over four different 9-Pocket Page options available to accommodate sleeving preferences, choose from a diverse range of archival-safe, high quality Custom A4 Pocket Pages developed by fellow collectors options to organize your collection exactly as you need.
- Tested for Long-Term Use: Developed over two years, the Custom A4 myCOLLECTION Binder has been rigorously tested on the collections of fellow collectors to ensure it can withstand daily use, access and handling across years of collecting.
- Original Artist-Illustrated Designs: Behind the design of every myCOLLECTION binder is a unique story showcasing original artistry and work. In a world where AI has made originality more vulnerable than ever, we take a clear stand: no AI-generated designs.
- Exclusive and Trademarked: myCOLLECTION is a registered trademark, created and protected exclusively by ULTBIAS. When you choose myCOLLECTION, you know you’re getting the original and trusted brand built for collectors, by collectors.
Specification
What's Included
[PRE-ORDER] Part I - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder
Sale price$129.95
Regular price (/)
Also available in Mystic Purple
10% OFF
PRE-ORDER
PRE-ORDER
A4
DUO
BINDER
10% OFF
PRE-ORDER
![[PRE-ORDER] Part I - Astro - Misty Purple - Single - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_Astro_Single_Hero.jpg?v=1791335846&width=3000)
PRE-ORDER
A4
SINGLE
BINDER
10% OFF
PRE-ORDER
![[PRE-ORDER] Part I - Wanderlust - Misty Purple - Single - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTI_Purple_Wanderlust_Single_Hero.jpg?v=1791336394&width=3000)
PRE-ORDER
A4
SINGLE
BINDER
10% OFF
PRE-ORDER
![[PRE-ORDER] Part II - Astro - Misty Purple - Single - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTII_Purple_Astro_Single_Hero.jpg?v=1791337326&width=3000)
PRE-ORDER
A4
SINGLE
BINDER
10% OFF
PRE-ORDER
![[PRE-ORDER] Part II - Astro + Wanderlust - Misty Purple Duo Edition - A4 myCOLLECTION Binder](http://ultbias.us/cdn/shop/files/3000_3000_A4_PtI_PtII_Purple_Pre-Order_Square_JPG_Listing_PTII_Purple_Duo_Hero.jpg?v=1791336731&width=3000)
PRE-ORDER
A4
DUO
BINDER
"This set has it all!"
"It's the perfect way to upgrade from a hobby collector to a full fledged full set collector; from the backboard to protect the pages from bending to the Binder Shield that keeps the pages in place when they're stored upright - this set has it all! I'm so happy with this set, and I recommend this brand to anyone!"
★★★★★
Kenya W.
Made for collectors, by collectors
BUILT PREMIUM
BUILT PREMIUM
From the outer case right through to the packaging, we're serious about craftsmanship and exclusively use premium, high-quality materials at every step of the process to deliver on our promise of offering the very best with our myCOLLECTION binders.
BUILT TO PRECISON
BUILT TO PRECISON
In development for almost two years, behind every little detail of the myCOLLECTION binder lives meticulous attention to thoughtful and utilitarian design, an enhancing and distinctive experience that's made our binders coveted by collectors worlwide.
BUILT TO HOLD
BUILT TO HOLD
Our binders are optimized at every level to offer maximum storage capacity without compromsing on protection. From the custom-engineered reinforced binder rings to our protective Binder Shield mechanism, we've thought beyond simply storage and have built long-term protection right into the design.
BUILT TO DISPLAY
BUILT TO DISPLAY
Opting for Pantone Sun-Ink and UV Resistant printing in combination with our exclusive Kosmic Paper™, the beautiful finish of the myCOLLECTION binder literally stands out from the crowd with depth and vibrancy that sets it apart from ordinary PU or plastic coverings.
Add on pocket pages & save 20% off*
Add-on Custom A4 Pocket Pages to your binder pre-order and save 20% off each pack of pages.
*A pre-order binder must be added to your cart first to successfully redeem the offer on the pocket pages. Discount automatically applied at check-out.
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 1-Pocket Pages](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_1_Pocket_Page.jpg?v=1772514372&width=3218)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 2-Pocket Pages](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_2_Pocket_Page.jpg?v=1772514426&width=3218)
![[PRE-ORDER] Custom A4 2-Pocket Pages - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-2-pocket-pages-6867952.jpg?v=1772514426&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 3-Pocket Pages - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-3-pocket-pages-2759247.jpg?v=1762458333&width=3855)
![[PRE-ORDER] Custom A4 3-Pocket Pages - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-3-pocket-pages-8072779.jpg?v=1762458333&width=3567)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 4-Pocket Pages](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_4_Pocket_Page.jpg?v=1772514615&width=3218)
![[PRE-ORDER] Custom A4 4-Pocket Pages - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-4-pocket-pages-2221717.jpg?v=1772514614&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 6 Pocket Pages - Horizontal](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_6_Pocket_Page_Horizonal.jpg?v=1772514697&width=3218)
![[PRE-ORDER] Custom A4 6 Pocket Pages - H - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-6-pocket-pages-horizontal-1519315.jpg?v=1772514697&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 6 Pocket Pages - Vertical](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_6_Pocket_Page_Vertical.jpg?v=1772515274&width=3218)
![[PRE-ORDER] Custom A4 6 Pocket Pages - V - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-6-pocket-pages-vertical-8372255.jpg?v=1772515274&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 8-Pocket Pages](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_8_Pocket_Page.jpg?v=1772515263&width=3218)
![[PRE-ORDER] Custom A4 8-Pocket Pages - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-8-pocket-pages-1754331.jpg?v=1772515263&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 9-Pocket Pages – V3 – Outer Size](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_9_Pocket_Pages_V3_Double_Sleeve.jpg?v=1772515690&width=3218)
![[PRE-ORDER] Custom A4 9-Pocket Pages – V3 – K-Pop Double-Sleeve - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-9-pocket-pages-v3-outer-size-8381609.jpg?v=1772515690&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 9-Pocket Pages – V4 – Standard Fit](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_9_Pocket_Pages_V4_Standard_Fit.jpg?v=1772516236&width=3218)
![[PRE-ORDER] Custom A4 9-Pocket Pages – V4 – Standard Fit - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-9-pocket-pages-v4-standard-fit-1715133.jpg?v=1772516236&width=1500)
A4
PREMIUM+
POCKET PAGES
20% OFF
PRE-ORDER
![[PRE-ORDER] Custom A4 10-Pocket Pages](http://ultbias.us/cdn/shop/files/2000_2000_A4_A5_CleanUp_Square_JPG_Shopify_Hero_A4_10_Pocket_Page.jpg?v=1772516080&width=3218)
![[PRE-ORDER] Custom A4 10-Pocket Pages - Prism Platinum](http://ultbias.us/cdn/shop/files/pre-order-custom-a4-10-pocket-pages-8516487.jpg?v=1772516069&width=1500)
A4
PREMIUM+
POCKET PAGES
SEE IT IN ACTION
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!