Pants Item Number: E199 b from the MOA: University of British Columbia
Trousers made from unbleached cotton with drawn work panels at the cuffs, two pleats at the front, a pocket at the top left, and ties at the back.
man's daily wear garment
Based on the style of manufacture, the shirt and pants (parts a-b) appear to be from Xochistlahuaca, a municipality located in the southeast corner of the state of Guerrero.