It is a hanger that can clip the pants.
There is no problem with the hanger in any material, but for Clip, we strongly recommend that it be printed in a resilient material such as PETG or PC. I printed it out with Sunlu's ABS, and it works at a level where there is no problem in fixing the pants as it requires some force in the operation.

The setting of the output direction is very important because the force is applied. I recommend setting the floor as shown in the following picture.

Printing environment
Pirnt : Ender-3 V3 Se
Slicer : Orca Slicer V 2.1.1.
Layer height : 0.2mm