Since those towel loops always break, i made this printable loop to clip on to your towel so you can still hang them nicely. 

One problem with printable loops like this is that the towel keeps slipping off, so I added a clip to make sure the loop stays on. 

To mount the loop: Fold the towel and slide the loop on. It is important that the towel is not sticking out on the back, otherwise the clip wont fit (see pictures). Secure with the clip form the back, so it is out of sight. 

I have added a small clip, that can be used with thin towels, like kitchen towels etc. 

PLA works fine, but PETG is to prefer due to the added flexibility.