I have started moving more towards the all mesh eyes when I can because of the overall vision it offers. With dye sublimation and the vinyl mesh it has made my eyes pop and feel alive. So the black around the eyes is actually a 3d printed piece meant to fit these bases perfectly (the base itself is TPU). It has a bit of a curve to it so the eye does not stay flat on the head and gives it a bit of a curve making the eye look a bit rounder which gives it an overall better look than just pasted on like a sticker. The black around the eye is just black PLA but it has been flocked black to give it the look of felt around the eye but still keeping it really uniform, thin and clean (helps hide all the print lines). Since the area around the eye is tucked into the socket there is little worry about the flocking getting affected in any way. Just happy with the way this is working out giving me the option to make even cleaner heads overall.