Impressions is now Superior brand. Affordable luxury linens. Experience the best in affordable luxury with these cotton blend pillowcase sets. Made from a premium blend of 55percent cotton and 45percent polyester, these pillowcases are soft, comfortable, perfect for everyday use, and wrinkle resistant. These single ply pillowcases have a striking sateen finish to them and feature a pleated detail at the hem. This 1200 thread count cotton blend is strong, durable, and if cared for properly, will be long lasting. Heritage. We have been manufacturing fine linens for over 40 years. We are experts in manufacturing high quality textiles and pride ourselves on only producing the finest products.