This is a Leg Hose Connector that I designed some years ago for a friend. I designed it using reference photos I found online, and added a groove in the base to make it easier to sew into the Ghostbuster coverall. I originally uploaded the part to thingiverse, but decided to upload it hear since I've got a couple Bambu Lab printers. I've included photos of the original part when it was printed in ABS, as well as a phot of the TPU part I printed for this listing.

the thingiverse link: https://www.thingiverse.com/thing:1019261