That webbing was from the American Science & Surplus catalog, always a wonderland of oddities.
Awesome catalog; I ordered something from it every time it arrived; fugly colored webbing, rare earth magnets (magnet “fishing” with the kids), stone arrowheads (amazing how many trips we did on which the boys found arrowheads. . . . .not just the boys, a couple of adult companions were excited at their “find”), weird little tools and other doohickies.
Have a gander at the “Containers”, “Outdoorsy” and “Tools/Hardware” links.