In many parts of Mexico, children receive gifts during the Christmas season, but it is not typically Santa Claus who brings them. Instead, the tradition is for children to receive gifts from the Three Wise Men (Los Tres Reyes Magos) on January 6, which is celebrated as Three Kings Day (Día de Reyes).
According to this tradition, the Three Wise Men, who visited the infant Jesus after his birth, bring presents to children who have been well-behaved throughout the year. Children write letters to the Three Wise Men, similar to the letters written to Santa Claus in other countries, and leave their shoes out on the night of January 5th, hoping that they will be filled with presents by morning.
It is worth noting that while Santa Claus is still recognized and known in Mexico, his role in gift-giving during Christmas is not as prominent as it might be in other countries. The focus is more on the Three Wise Men and the religious significance of the holiday.