Canvas is a heavy duty fabric that is made from cotton or linen. It is very durable and used to make things that have to be strong. One of the ways canvas is used is to make bags. Bags made from canvas are sturdy, tough, and typically have a long life.
Since canvas is a product of cotton, and cotton is a plant that is cultivated over and over again, canvas is considered one hundred percent renewable. As such, it is a very ecologically friendly material.