miah. Duck Egg Blue 200 Thread Count Cotton Percale Oxford Pillowcase. 50% Combed Cotton / 50% Polyester. Easy Iron for super low maintenance. “Perfect corners” made possible by an extra seam. Durable fabric perfect for the modern busy household. 200 Thread Count. Durable. Easy Care. Our 200 count bed linen allows you to enjoy a more premium feel of a higher thread count cotton, but with the durability and low maintenance of polyester.