Search  for anything...
Case it

Case-it School Zipper Binder | 3-Inch O-Rings | 600-Sheet | D-146 Jet Black

  • Based on 19,055 reviews
Condition: New
Checking for the best price...
$23.99 Why this price?
Save $3.00 was $26.99

Buy Now, Pay Later

As low as $5 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Oct 3
Order within 14 hours and 54 minutes
Available payment plans shown during checkout
Protection Plan Protect Your Purchase
Checking for protection plans...

Recently Viewed

Color: A Jet Black


Size: 1 Pack


Features

  • ORGANIZATION: A built-in 5-tab expanding file folder makes color-coded subject organization effortless. Perfect for busy students managing multiple classes.
  • SPACIOUS & SMART DESIGN: 3-inch O-rings and 600-sheet capacity.
  • ALL-IN-ONE STORAGE: Multiple interior and exterior zippered pockets provide a secure place for pens, pencils, small personal items, and more. No more digging through backpacks.
  • EASY-CARRY HANDLE: Built-in handle makes it easy to grab and go no backpack required.
  • QUALITY: Made from durable ripstop material, this binder resists wear and tear, standing up to even the toughest school days.

Description

Keep schoolwork neat, organized, and easily accessible with the Case-it Mighty Zip Tab School Zipper Binder. Designed for students juggling multiple subjects, this binder features a 5-subject expanding file folder for seamless color-coded organization. Its spacious 3-inch O-rings hold up to 600 sheets, making it the perfect companion for even the busiest school days. Built-in interior and exterior zippered pockets provide secure storage for pens, pencils, and small essentials—no more digging through backpacks. A durable handle and adjustable shoulder strap make carrying it between home, school, and extracurricular activities effortless. Crafted from high-quality ripstop material, this binder is made to withstand daily wear and tear while keeping everything in place. Plus, with easy access to the expanding file folder, you can grab important papers without unzipping the entire binder. Why Choose the Mighty Zip Tab School Binder? Ultimate Organization – A built-in 5-tab expanding file folder makes color-coded subject organization easy. Spacious & Smart Design – Holds up to 600 sheets with secure 3-inch O-rings to keep papers from slipping. All-in-One Storage – Multiple zippered pockets offer safe spots for pens, pencils, and personal items. Portable & Comfortable – Features a sturdy handle and adjustable shoulder strap for easy transport. Durable & Reliable – Made with ripstop material to handle everyday use without fraying or tearing. Whether you need to keep track of homework, assignments, or important notes, the Case-it Mighty Zip Tab Binder ensures they stay organized, prepared, and ready for success!

Color: A Jet Black


Material: Kraft Board with Ripstop Nylon


Capacity: 600 pages


Brand: Case it


Sheet Size: 8.5 x 11


Brand Name: Case it


Number of Pieces: 1


Number of Packs: 1


Package Size Name: 1 Pack


Number of Items: 1


UPC: 022293117296


Item Highlight: Mighty Zip Tab, 5-Subject Expanding File Folder, Multiple Pockets, Storage Organizer, Shoulder Strap, Office


Unit Count: 1 Count


Item Type Name: Binders


Item Weight: 2.2 pounds


Manufacturer: Case-it


Model Number: D-146-JBK


Manufacturer Part Number: D-146-JBK


Capacity: 600 pages


Paper Size: 8.5 x 11


Hole Count: 3


Supported Paper Sizes: Letter (8.5 x 11 inches)


Binder Ring Type: O-Ring


Number of Dividers: 5


Color: A Jet Black


Material Type: Kraft Board with Ripstop Nylon


Item Dimensions L x W: 13"L x 13"W


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Great School Binder!
Color: Z-black Size: 1 Pack
August 2013: I normally wouldn't write a review for a binder that has ~134 reviews, but this has gotten some negative reviews and I feel this is a good binder. I have 2 kids going into 7th and 9th grade and they need "giant" binders because every teacher wants them to have a tabbed section for their class. So, I have had experience looking for binders that are 3.5" wide at the spine, or larger, for 3 years. This is my 4th year. These types/styles binders are not always the most durable. Twice, I've had to purchase a new binder 1/2 way through the school year or sooner. My kids haven't used these yet, but just looking at this binder, it seems more durable than many I've seen and/or purchased. The 3 rings, and the "tabs" on the top and bottom for opening the rings, are metal. Last year, my sons' binders had metal rings but the tabs were plastic, so, of course, they broke. This shouldn't be a problem with the metal "tabs." The hard cardboard or plastic (I don't know what it is) that makes the front and back covers stiff, and is covered with the "fabric" is quite stiff. I'd say stiffer than some past notebooks my son's have used. So I expect it to hold up better than some past binders. This notebook also has a nice handle along the spine, as well as a long, adjustable strap, for carrying the binder, if you don't want to put it in your backpack. As far as this binder not fitting into a backpack when several large textbooks are present (as another reviewer stated), the solution is to purchase a large backpack with a large base/bottom. For example, this binder fits just fine, with room for at least 3 text books in the Dakine 33-Litre Campus Pack Dakine 33-Litre Campus Pack and Dakine Campus Laptop Backpack whose base/bottom measures 9.5"X8" and widens to 13" in the middle. A school backpack's base size is important, not so much the volume. I know this because I've tried other packs that had the same, or larger, volume. But they didn't work as well for school packs because its the base/bottom size that is more important for carrying books (as opposed to camping, hiking, etc.) So get the right pack. i do agree with a previous reviewer, that the accordion file section is a waste of space. But, it doesn't take up that much room and can easily be cut out with scissors. UPDATE (October): 1 quarter down (and 3 to go) and these binders are still looking good and functioning as they are supposed to. No problems with the rings. No fraying or missing edging. No rips/tears/etc. UPDATE (December): Well, the semester is almost over (1 week to go) and this binder has held up like a trooper. And boy do I mean that. My high school freshman has his jam packed. And, when I say "jam packed," I mean it is full to it's limits! Over Winter Break we will go through it and file away things he doesn't think he needs anymore in his desk, so he has room to "jam pack" it during the second semester. All bindings and everything are still intact. The 3 metal rings are still working. UPDATE: May, 2014: School will be out in 3 weeks and this binder is still going strong! My kids might even be able to use it next school year. Great purchase and value! UPDATE: January 2015: My younger son is using his same binder from last year and we are through the 1st semester and it's still going strong! My older son wanted a new binder (Actually 2 smaller ones because he has "A" and "B" days in high school and that way he only needs to carry 1 smaller binder, for 3-4 classes each day, rather than one large binder for 6 classes. I bought him 2 of the same brand, just smaller/thinner.) But "oooh" and "ahhh" to THIS binder. 1.5 years and still going strong! Final update: March 2016: I only buy this brand for my boys now. They are truly amazing. My younger son used his 1st one for 1.5 school years and then something happened to the rings (which might have been his fault - I'm still skeptical), so I bought him a new one. If I was in a financial "pinch" he would have kept using it, as it was more annoying that unusable. Since this initial purchase, I have bought this brand from Amazon in various sizes, depending on my kids' needs, and they are all equally durable. Thank you Case It for finally making a durable binder in a variety of colors and sizes! ... show more
Reviewed in the United States on August 8, 2013 by EmptyNester
    • Essential for MS
Color: A Jet Black Size: 1 Pack
Regular binders couldn’t hold everything my Kid needed. Ordered this binder and she loved it. Doesn’t have to go to her locker all the time. Easy to carry along. Closes up well with all the things inside. Has held up well through 6 months of school. She likes the filing system to label for each class. Using this again next School year. ... show more
Reviewed in the United States on July 15, 2026 by Csaedio
    • School folder
Color: B Midnight Blue Size: 1 Pack
This binder is sturdy, spacious, and perfect for keeping school supplies organized. The zipper keeps everything secure, and the multiple pockets are great for storing pens, papers, and small accessories. The shoulder strap makes it easy to carry, and the quality is excellent. It holds a lot of papers without feeling flimsy. I highly recommend ... show more
Reviewed in the United States on July 6, 2026 by Yandira Oliva
    • Great product, great price!
Color: H Magenta Size: 1 Pack
If there were 10 stars I would give it that. I absolutely love this! I will be ordering 2 more in different colors for my projects.
Reviewed in the United States on August 16, 2026 by Carol Haron
    • Great binder for the price!
Color: K Purple Lavender Size: 1 Pack
Great product! My daughter is so happy with this as we have gone through no less than 8 binders for her 5th grade year! This product holds everything she needs and it's what all the "cool" kids have! Labeling is good and easy to read! Ring closures work great and keep all her notebooks and papers neatly organized! Zipper works well and closes with no issues! She's been opening and closing it non stop and it's working great! ... show more
Reviewed in the United States on March 5, 2026 by Zeidy Box
    • Recommended
Color: B Midnight Blue Size: 1 Pack
Great for helping kids stay organized and keep everything in one place. It lasted two years before it ripped. I've seen it overloaded, thrown around and take a real beating so i'd definitely recommend it.
Reviewed in the United States on July 28, 2026 by Flo
    • Great Binder, but design does not promote organizational skills
Color: Z-black Size: 1 Pack
Reaction by sixth grader when the binder first went into service: "It has been extremely tough and is great at keeping school stuff together and organized. It has room for all six of my subjects in the file area and the big rings obviously can hold a lot. The built in pencil case is very useful. The outside pocket is useful for keeping small papers and notes handy. It is the only thing I need to carry between my classes and holds everything (except maybe some books)." Mom adding this two years in to the binder's service life: If you are after durability, I'd say this is a great choice. It has held up really well, and after two years of daily use, I don't know of any part that is worn or dilapidated. I have to say, though, it does not seem to be that good for helping a kid be organized about his school work. Opening and closing the rings is enough of an operation that usually papers just get stuffed in to be sorted out later, and somehow things are always getting lost or being disgorged and spread all over the floor. A single giant ring binder makes it difficult to move papers around. I'd caution against anyone getting this binder with the idea that it will be a remedy for the organizational shortcomings of a disorganized child. ... show more
Reviewed in the United States on November 17, 2016 by Emommy
    • Superior to similar ones!
Color: A Jet Black Size: 1 Pack
After needing a replacement for a similar one less than halfway through the school year, my middle schooler got this one and loaded it up and probably wasn't careful -at all- with it. It held up really well! I would definitely buy again!
Reviewed in the United States on June 11, 2026 by Crystal

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...