The ancient Wayuu ancestors used to weave these Mochila Bags with natural fibers like wool. Nowadays, Wayuu people use synthetic fibers made with 100% Acrylic. It is important to note that some retailers on the internet erroneously advertise these bags as being made out of cotton, just to drive their sales. Cotton is much harder to come by and much more expensive for the indigenous people to acquire. Besides, Acrylic fiber is weather, wear and tear resistant; it can be easily washed in the washing machine and can last many years.
