Each Fredrix Watercolor Archival Canvas Board is made of 100% woven cotton with a special coating that performs similiar to the rough texture of cold pressed watercolor paper, while providing a distinctive look that can only be achieved on canvas. Fredrix Watercolor Canvas Boards accept all watermedia and mixed media techniques, including acrylic and watercolor inks, transparent and opaque watercolors, fluid acrylics, and even watercolor pencils. Fredrix Watercolor Archival Canvas Board will also work well with traditional acrylic paints in different viscosities. These durable boards will not buckle, making them perfect for both indoor and plein air painting. They are available in a variety of large sizes, and are guaranteed to be 100% archival quality.