Design born from necessity

A tool case used by linemen (wire engineers) hanging from their waists at the old American telephone company BELL SYSTEM.
It was a design born out of practicality, with seam allowances and seams exposed to provide strength so that even if sharp tools were inserted, the seams would not be cut.

When I learned about its existence and the meaning of its design, the first thing that came to my mind was the Route Setter's tool bag.
I had heard from a route setter that the seams were torn due to the insertion of sharp screws, so I realized that they were used for exactly the same purpose, and that the shape was exactly like that of a chalk bag. I felt a sense of surprise and a strange connection.

This is a multi-bag for route sets that was inspired by that.
It has a simple construction so that it can be used for a variety of purposes, such as combining several items or supporting other tool bags.