Duck fabric is a heavy, plain-woven cotton fabric. It is tightly woven and typically has a plain or twill weave. Duck fabric is known for its durability, as it is tightly woven and can withstand wear and tear. It is commonly used to make curtains, slipcovers, aprons, and other home decor items, as well as bags, backpacks, and other accessories. Duck fabric is also used to make workwear and outdoor clothing because of its durable qualities.