It's a fairly wide cupholder couch/sofa mount, designed to accommodate our larger sofa/couch/single seat recliner arm rests (up to 210mm), but I don't believe it will be as useful on smaller arm settings, without first adjusting the model for your specific requirements (stl provided should you need to reduce the size).

I printed this a couple of times in Bambu Lab PETG Translucent Orange (I had a bit too much of this to begin with, that's my excuse, and I'm sticking with it!), so estimated print time can certainly be reduced if using other PETG variants (HF, Basic, etc). I haven't tried in PLA, purely because I wanted to retain some of the heat-resistant qualities of PETG, but you can certainly try it out in PLA, and let me know how it goes!

The cupholder itself was designed to have a diameter large enough to fit in some of the IKEA 365+ Cork Coasters (10cm option), because, well, we like our large mugs of coffee! Again, this could be scaled down with the stl, if you feel confident enough to modify. I wouldn't advise scaling the model in the slicer directly, because then multiple aspects of the model would be changed, and I can't guarantee the print success.