It maintains its original form and color even after multiple washes, ensuring your sheets look as good as new for a longer period It maintains its original form and color even after multiple washes, ensuring your sheets look as good as new for a longer period50 cotton 50 polyester percale sheets. The blend of polyester with cotton enhances the strength and resilience of the percale sheets, reducing the need for frequent ironing.Cotton is a staple fabric spun from the fibers of cotton plants. People around the world have been cultivating it for thousands of years. One of the earliest bits of cotton is at least 7,000 years old and was found in Mexico. In Egypt and Pakistan, people were weaving cotton thread into clothing in 3,000 BC. And in the 18th century, the British first found a way to spin cotton into textile with machinery.