T-200 Quality Bed Sheets & Pillow Cases are made of 50% polyester and 50% Cotton. The optimum polyester / Cotton blend makes our Pillow Case Stronger, Long Lasting with Shrinkage Control. Our Pillow Cases are Wrinkle Resistance  with No Ironing Required. Use of Premium Processes in Weaving, Bleaching, and Stitching makes A-Jill and Celebration brand of sheets superior in hotel industry across the country, which make it the Best Bed Linen in the Industry.