This luxury Percale Sheet is in our eyes the highest quality & best value polycotton sheet we've come across. Made to the same exacting standards for over 25 years, this percale is woven in a cotton & polyester blend, with a minimum of 180 threads per square inch. This ensures an easy-care, durable product with a luxurious softness for maximum comfort. Helena Springfield luxury Percale is guaranteed for 7 years under normal conditionsof use, against faulty workmanship & materials