Just squeeze the folded bag top until it is relatively thin and effortlessly slide the clip over the fold.
The color change layers used for the print in the photos are in the provided files.
The batman bag clip shown in the photos used:
The robin bag clip shown in the photos used:
**Please see the written note below on the licensing of this remixed model.
The author remixed this model.
Replaced the octopus face with the Batman logo and the Robin logo, respectively.
The robin logo was obtained here:
https://www.printables.com/model/218591-robin-logo-emblem-badge-symbol
However, I did not list it as a re-mix model in the form field above since there is some conflict on the form when combining the three models licensing and it wouldn't let me make a license selection to submit the form. However, all of the original models allow remixes.
Regardless of the licensing file on this listing, the robin logo model does not allow:
Commercial Use
Free Cultural Works
Meets Open Definition