Before sourcing a single piece of material, we built the bag from paper, tape, and cardboard.

Base width, handle position, and what a 9L looks like at actual volume on an actual frame. These can't be answered on a screen. We had to answer them by building paper models.

13 paper versions were built before the structure held. Each one was folded, worn, adjusted, torn apart, and rebuilt. It taught us more about the bag than any software or AI ever could.

Now came the harder problem: finding someone capable of building it.

Building a bag from scratch means finding the right people to build it. This process alone was longer and more challenging than what we've expected.

We reached out to multiple suppliers across Mainland China. Factories specialising in carry gear, tactical bags, and premium outdoor equipment. We sent spec sheets, reference photos, and detailed questions about stitching standards, and material sourcing. Some replied fast. Some went silent. Some sent samples that looked nothing like what we asked for.

Every exchange taught us something. How to write a brief that left no room for misreading. Which factories understood quality versus which ones were optimising for speed. What would reveal whether a factory actually cared about the quality and build of the bags.

At one point, remote communication was no longer enough. We flew to them.

Both of us flew to China for 14 days. Not for a sourcing tour or a holiday, but a business trip with one purpose: to find the right factory, touch the right materials in person, and confirm that the bag we had been designing for months could actually be built to the standard we needed.

We visited multiple factories. Some were large operations running dozens of production lines. Others were smaller workshops where every stitch was done by hand. We were not looking for the biggest factory. We were looking for the most attentive one.

At every stop, the assessment was the same: whether the factory personnel engaged with technical corrections or resisted them, whether they cared about the details the same way we did, and whether they could glance at a spec sheet and immediately understand what we were trying to achieve.

Machinery is replaceable, but the quality of attention isn't. We kept going until, we eventually found one.

A bag can be made from the best material in the world and still fall apart at the seams. The quality of stitching is the difference between a bag that lasts two years and one that lasts a decade.

At every factory, stitching was the first thing we checked. Stitch density, thread tension, seam finishing at high-stress points. Whether bar tacks were correctly placed and corners reinforced, or simply folded and sewn over.

Then we gripped every seam and tested it under force. A bag that cannot survive a pull test cannot survive daily carry. We eliminated every factory that did not pass.

The factory we chose passed every test. More importantly, they understood why we were testing. They welcomed the scrutiny. That settled the partnership. Prototyping could begin.

Signing a factory is not the end. It was the beginning of a new set of problems.

We carried each prototype hard for a full week in Singapore. Took it apart at the end, went back with a list of everything that wasn't right. Four key reiterations were done over months before a single unit was approved for production.

Structure first. First physical sample in fabric: testing whether the structure held the form we had built in paper. The base needed to stand on its own. It came back close, but the base wasn't rigid enough.

The carry test. Base reinforced. Handles repositioned. Worn for a full week in Singapore. The strap padding wasn't distributing load correctly. The false bottom foam density needed adjustments. Zipper pulls needed to be longer for true one-handed access.

The detail test. Strap padding revised. False bottom foam corrected. Zipper pulls updated. Interior lining colour confirmed as high-visibility orange. Buckle position for the tactical adjuster locked in. And branding placement finalised.

The final sample. Everything came together. The bag stood on its own. The strap distributed load correctly. The false bottom sat exactly where it needed to. The three handles were in the right place. The orange interior lit up the moment the bag was unzipped. We signed off.