Please don t bring shorts. They will only offend the locals wherever you go. Also no shorts, please. Otherwise, Tuxtla Gutierrez is a very casual town by US standards. The older men wear traditional embroidered shirts with dress slacks and either heavy sandals without socks or leather shoes such as loafers.
Young men wear short-sleeved plaid shirts tucked into jeans or slacks.
They, too, wear sandals or loafers. Only occasionally do the men here wear tennis shoes except for sports activities. Shorts are only seen on joggers, soccer players, and European tourists. Nor will you see men wearing business suits. Cell phones, beepers, and manila folders mark the local with serious business interests.