Written by: Jin Fujisaki / Published: 2026-02-23
When you hear "Sakura Color Products," many people think of Coupy Pencils or crayons. But right now, an explosive hit among adult stationery lovers and organization enthusiasts is the "Komagoma File," released as part of the company's "Tidy-Up Series."
Originally developed under the supervision of organization advisor Taeko Mizutani, the concept was "to help children tidy up the origami and stickers they tend to scatter around, all by themselves and with joy." However, once it went on sale, it spread like wildfire on social media with comments like "perfect for organizing receipts" and "ideal for storing trading cards from fan activities and stationery." This is a miraculous product where the "intuitive ease of use" unique to children's items has somehow brilliantly resolved the everyday stresses of adults as well.
| The Self-Standing "Accordion Pockets" Deliver Unparalleled Visibility
image Sakura Color Products
The greatest charm of this file lies in its "accordion-style pockets," which open up to a maximum of about 20 cm. When you peel off the hook-and-loop fastener (Velcro) and spread it out, six wide pockets fan open and the file "stands upright" right there on your desk.
Because the pockets are designed to be slightly shallow, small items like sticky notes, stamps, and clips placed inside don't get buried at the bottom. While working, you can simply leave it standing open beside your desk and grab what you need in an instant, just like a pen holder. This ultimate visibility — being able to see "what's where" at a glance — is the biggest reason it has captivated lazy adults everywhere.
| A Handle for Quick Moves, and Stress-Free Opening and Closing
image Sakura Color Products
The commitment to practicality is evident even in the smallest details. The top of the body features a sturdy "handle," allowing you to carry your household budget set or work tools from the living room to the study, all bundled together.
Another key point: rather than zippers or buttons, it deliberately uses hook-and-loop fasteners. Since it can be operated with such light force that even children can easily open and close it, the psychological hurdle of taking out and putting back small documents and notes is reduced to almost nothing. When not in use, it slims down with just a quick snap shut, and its space-saving design fits neatly into bookshelf gaps or drawers — truly outstanding.
| The Long-Awaited "A4 Size" Has Arrived, Bringing an End to Household Document Woes
image amazon
Following the explosive hit of the standard size, an "A4 size (landscape orientation)" has joined the lineup in response to passionate user requests. This version boasts a generous 13-pocket capacity. By using the included index stickers, you can perfectly sort the home appliance manuals, monthly statements, and children's school handouts that tend to become scattered — all with this one item.
Of course, the A4 size also stands on its own, so there's no longer any need to flip a file box upside down when searching for documents. The current organizing trend is to use the standard size (5 colors total) and the A4 size (3 colors total) according to your needs.
| Summary: The "Magic of Organization" Available for Under 1,000 Yen
image Yahoo!
The standard size is priced at 847 yen (tax included), and even the larger A4 size is just 1,210 yen (tax included) — pricing that reflects the conscientious approach Sakura Color Products is known for.
"My desk is always cluttered with little odds and ends." "The inside of my drawer is total chaos." For everyone with these kinds of worries, the "Komagoma File" delivers dramatic improvement. Don't dismiss it as just a children's item. This file is the ultimate storage gadget that will skyrocket an adult's quality of life.
