A very nice looking model of a female back and bottom anatomy, usable as pen holder or just nice to watch.

I used Eryone Silk Copper, which is a really nice material in my opinion. I used 0.08 extra fine, because it printed over night anyway, but i guess it's not making a difference. Therefore i upload the 0.12 profile. Support was active, for the part between her legs. Probably not needed, not sure. For the weight i would recommend even more infill, i used default. I will but some rubber tape on the bottom to stop it slipping when inserting the pen.

I tried to put the seam on the back as far as possible.

It's printed on 130%, and the opening fits my zero gravity pen (about 10mm wide) very well.