Mug Holder for IKEA POÄNG

My dad asked me to make him a mug holder for his POÄNG Chair so that he can enjoy his coffee and that's exactly what I made! The inside diameter is 79.5mm. It clips firmly onto the chair with the help of the two clips I have added which help keep the holder in place! I hope you enjoy my design as much as my dad and I appreciate any feedback!

I printed this in 0.4mm layer height with a 0.6mm nozzle because I wanted it to print quickly. It will work with a 0.4mm nozzle & 0.2mm layer height but the clearances might be slightly loose. I also suggest using supports. Lastly it was printed in PETG with 4 walls for a good balance between strength, flexibility and heat resistance, other materials will work too though.