Nine ribs make up this design as it gradually increases it’s diameter. The base is thin so that it can be worn comfortably.
No support needed, Print it in the same orientation as on the picture (you will have to rotate it in your slicer).
Max diameter is 5 centimeters but can be changed be up- or downscaling the file. 10.5 centimeters high but once again can be changed by scaling.