Cotton Duck also simply duck, sometimes duck cloth or duck canvas — commonly called “canvas” outside the textile industry — is a heavy, plain-woven cotton fabric. There is also linen duck, which is less often used. Duck fabric is woven with two yarns together in the warp and a single yarn in the weft. Common uses of Duck include:shoes and sneakers,tents,sandbags,homemade artist canvas for paintings,aprons,totes,backpacks,duffel bags,handbags,lunch bags,shoes,and in many Industrial purpose