There are a few different versions of this that all stick out substantially from the seatbelt socket. I didn't want my dogs to break the protruding bits. Fits nice and tight. The tab goes towards the button side.
The long model is for the center seatbelt but will work for all of them.
Designed for a 2023 Subaru Outback Wilderness
I printed mine in ABS .2mm layer height
The author marked this model as their own original creation.