This is a clip to carry your (working) gloves attached to the belt. It is thought to put a carabiner or whatever you want. In the photos you see the "Origami Carabiner" by Charlie1982, which works great: https://www.thingiverse.com/thing:1819242 . I'm planning to try and make it a bit smaller, but I'll test it on a few festivals this summer for weak points.