“Go with Fourgee Men’s Tee”.100 % 180 GSM cotton bio wash bright color & texture to give you perfect comfort most suppliers advertise promotional tshirts from 135-140 gsm. Fourgee provides the good quality. Discharge printing: Fourgee discharge ink is a water-based product that deactivates the dyes used on natural fabrics. You have probably seen many shirts with a very soft print that looks like the colour of natural cotton – this is discharge printing. Discharge screen printing can be used to print colors on dark garments that in the past would have required an additional layer of white ink in order to achieve proper opacity of top colours.