A coated canvas bag is made from a woven fabric, typically a durable cotton or polyester canvas that is coated with wax or resin and then treated with heat.  Depending on the materials used, the finish can be permanent: (glazed or pvc-coated) or temporary: (wax). Coating materials in a permanent way is integral to high-quality designer handbag brands, as it will allow the bag to last much longer than faux leather or polyurethane and is ecologically preferable.