The answer for why t-shirts are popular is their comfortable, Comfortable depants on its knitting technique and the type of yarn used. Means low twisted yarn, which in general gives the soft feeling for these types of fabric that’s why we prefer in daily routine, to use t-shirts as a casual wearing
T-shirts are preferred casual wear nowadays, and most people are likely to wear t-shirts. T-shirts are the first choice for casual wear. People are using it for an outing, holidays, weekend dress codes at offices, and even some firms working dress, etc.