Ribbed garments provide the best form fit of all blank shirts as they stretch to meet the size of the individual wearing them. This is great the for final consumer but makes printing on them a challenge. When you pull a ribbed garment onto the press, it is not stretched out, so the ink only goes on the top of the ribs. Then, when the shirt is put on, the ink pulls apart, exposing a gap between the ribs that is not printed. We can apply more pressure on the press to try to force the ink into the gaps, but this limits the amount of detail that is actually shown on the garment. Because of these issues, we strongly suggest that if you want to print on ribbed garments, consider the use of discharge inks and or waterbase inks for lighter colors. Here is an example: