This cup uses geometry from several other designs: the basic shape is a 5-sided squircle (https://www.thingiverse.com/thing:3050195) and a fillet (https://www.thingiverse.com/thing:4975973). The rough surface is produced by specifying the "Fuzzy Skin" option in PrusaSlicer. The STL file has smooth sides as you would expect, so you can print this with smooth sides if you wish. FuzzyCup1 printed in a little over 8 1/4 hours using a print speed of 110 mm/sec.