A twill weave cotton fabric that is soft but tough as nails. Bull Denim is durable and heavy. Takes dye well with very good results. Not stiff like canvas. Our unique combination of thermal and reactive chemicals will maintain 99% of the ink in fabric with most ink jet printers. Simply heat set with a household iron to create vivid and permanent images. 100% Cotton Bull Denim White Pretreated Fabric - 10 Sheets!