Loveseat blanket cover holder clip

This is pretty niche, but I needed something to hold in place a blanket we're covering a loveseat with. We have cats, so we need the blanket to keep the loveseat from being covered in fur constantly. The blanket works for that, but since the cats like to sit on the loveseat (thus the fur problem), it kept sliding off the back of the seat. These clips keep it in place very nicely.

Due to the shape of the rails at the back, this clip holds on to the ridges very nicely and doesn't go anywhere. It can't slide side-to-side, only rotate around. The blanket simply slides into the clip and is held with friction. So far it's holding on quite nicely. It's a fairly thick, quilted blanket, about 3-5mm thick, so the 2mm slit compresses it a little bit and holds on quite well.

I printed this in PETG (Microcenter's generic Inland brand) for that little bit of extra give so both the back rails and blanket can clip in nicely without breaking the print. I used 2 walls and only 8% gyroid infill, which resulted in a nice balance between stiffness and flexibility. Printed with a 0.4mm nozzle at 0.2mm layer height. No supports needed when printed in the orientation in the .3mf. But I think all these parameters are open to tweaking to your liking. See the .3mf file for the rest of the settings I used.

The original OnShape model is available at https://cad.onshape.com/documents/dbc8e5dee937dd97cc68946f/w/40b7f75bd9025b88e20a50e7/e/9d7e2cea78413f108adbfb03?renderMode=0&uiState=6915eb0934c1ed39c586411f in case you want to tweak it yourself.