ARGENTINIAN POLO BELTS  UNISEX Carlos Diaz Equestrian Polo Belts. In Argentina, where polo is king, the snappily-dressed locals call these polo belts  they were originally made in team colours. Our polo belts are designed by us and manufactured to our high standards. Components include brass buckles and fabulous drum-dyed black buffalo leather which improves with age. Each belt is hand stitched that takes 5 man hours. Each belt will fit a waist from 30 inches to 40 inches which equals to 76cm - 102cm.