Kokuyo Campus Slide Binder, Adapt Slim, Double Pockets, A4, 30 Holes, Up to 65 Sheets, Light Blue, Japan Import (RU-AP171LB)

Love the style of these binders! I’ve struggled so much with binders in the past. The three holed one always had pages falling out easily cause of rips when you weren’t careful. But not these! I haven’t had a single page fall out while using it for multiple semesters. It has also stayed in tact well. Really hasn’t gotten damaged at all and I’ve had it for about 2 years now! Love the unique look of the bindings as opposed to traditional ones. Although it’s thin it can hold a lot of pages also! I can’t get enough of this binder!

and they work for me. Sometimes the opening (slide) mechanism sticks a little bit (I don't know why) and it helps to close it and try opening it again. Don't force it; it IS plastic, after all. But that is a small concern for me because I am routinely careful with it. These are advertised as holding 65-100 sheets of paper, and I think both are accurate, depending on what thickness of paper you're putting in them. I suspect it will hold about 100 sheets of Kokuyo Business paper, since it is noticeably thinner than most other papers, and closer to 65 sheets of Kokuyo Campus Sarasara paper.

Another excellent Kokuyo binder, with super high quality paper. It holds up and provides good protection when squeezed into my backpack with a heavy laptop and other notebooks. It lays flat when wide open and when folded inside out. I have added filler paper twice.

It came damaged in multiple large areas, not all pictured, because it had no individual packaging. However, it works really well. I put in two sheets of Kokuyo filler paper (from a separate product!) to test it and the rings feel super nice and durable. They do open easily but it’s kind of loud. The material is nice and sturdy and the pockets are easy to open to put extra paper into. You can definitely hold a lot in this.

Product works as advertised! I needed a 30 ring binder for my A4 sheets. Love the transparent look and the binder rings while plastic , feel sturdy.

Is light weight, and to my surprise holds paper pretty well, something I really like too is the fact that the folder comes with sides where I can store extra paper, which other kokuyo folder don’t come with, definitely recommend A LOT! 💟✨

Although it's advertised as a Japanese product, they're actually made in Thailand (see the back label). So if you're looking for Japanese level of quality for stationery, this ain't it. I bought two binders, one has dents in the front and back cover that won't go away. The other has rings that are just slightly loose, so if I turn a page it will snag on the gap between the rings, and requires some trouble to turn. That being said, they do work as binders, although not the best quality. I'm forced to buy 4 or 5 more of these for my classes since these are the only 30 ring A4 binders I can find on Amazon. If the new ones are not defective, I'll raise my rating to 5 stars.

First off, I used the packages of 50pgs of the kokuyo campus paper for reference. I can fit 65 pages in the binder without the paper snagging on the rings, 50 pages in the front pocket, 50 pages in the back pocket, plus a 3" x 3" (7.5cm x 7.5cm) pad of sticky notes in the little slot in the back pocket. Love it! Has been sturdy enough to hold up to my daily life, and I have three kiddos ages 6 and under who have gotten a hold of this. No cracks or broken rings lol

The inside flaps are useful in holding loose sheets, I also use the A4 muji paper as this brand is much cheaper than kokuyo. The only thing is that the flap on the inside is not made well so after quite a few months of use, it has basically torn/ripped along the bottom edge.

Bought this binder to fit 30 hole A4 paper from muji and it fit perfectly. It’s nice and easy to use. Good quality.

Me gustan mucho las encuadernaciones de 30 agujeros, más que de 4 o de 6 porque pasas las hojas como si fuera un libro o una libreta con espiral normal. Es cara así que, espero que me duren los materiales con el tiempo y los usos. Me ha gustado tanto que compré 3 unidades.

Es una carpeta de argollas de plástico A4 (más grande que tamaño carta en México), delgada, con el sistema de apertura kokuyo, que es distinto al de otras marcas, es bonita pero le caben máximo 60 hojas. La compré para un proyecto especial.

at first it looks expensive. but when I receive the product and using the product I did not think about the it selling price. Item is excellent quality. this is A4 binder with 30 holes. very useful if you put important documents. I am using this binder for my important printouts. currently making 30 holes manually with single hole puncher. I wish Amazon sells a solution for this 30 holes punching machine. Over all satisfied with the product.