"Polyester blend" refers to a fabric made by combining polyester fibers with other types of fibers, like cotton or wool. It means that the fabric is a mixture of polyester and another material. Full definition
Made from the highest quality polyester blended fabric that stretches easily, no matter your shape and size. (dresshead.com)
Yes, and also those who are wearing cotton with polyester blend. (religion.blogs.cnn.com)
Its vibrant floral pattern in rich color is beautifully printed on a stain - and spill - resistant cotton polyester blend that looks great and wipes clean. (bedbathandbeyond.com)