Vegetable tanned leather that comes in 2 different widths: 11-12 oz or 4,5 mm thick and 6-7 oz or 2,8mm thick. These argentinian hides average around 22 square feet, thus, not as big as their american counterparts. Anyways, the lower price and equal tanning quality provide a higher value per dollar.
The latigo is classically used for straps due to its high resistance.