These white pillowcases are made of 55% cotton and 45% polyester. This 12 pack set has a 180 thread count in a percale weave. The size of the standard pillowcase is 20 inches x 30 inches. The fabric used is ultra-soft and lightweight, allowing you to experience a smooth feel against your skin. The hotel pillows offer a crease-resistant finish and wrinkle-free surface, which eliminates the need for ironing. The white cotton pillowcases cater to the requirements of therapy clinics, spas, hotels, and homes.