Our heaviest natural cotton duck canvas is a strong, durable fabric that can be used for numerous applications. It features a tight knit weave with a grainy texture. The fabric itself is also soft and flexible, making it easy to work with. Additionally, it has light flow, no stretch and a matte natural color. It is frequently used for stretching canvases, mural painting, textile design and sewing projects. In addition, the 15oz weight offers more durability for larger projects while still being easy to use.