Polyester tablecloths are known for their durability and resistance to shrinkage. Unlike natural fibers such as cotton or linen, polyester is a synthetic material that maintains its shape and size even after multiple washes. However, it's crucial to follow the care instructions provided by the manufacturer. While polyester is generally resistant to shrinking, exposure to high temperatures in the dryer can potentially cause some minimal shrinkage. Therefore, to maintain the size and quality of your polyester tablecloth, it's best to air dry it or use a low heat setting if you must use a dryer.