This pillowcase is woven from 70% Mulberry Silk (32 Momme) + 30% cotton, making it more durable and not easy to wrinkle when compared with pillowcases made by 100% pure silk. Standard Size: 50.8 cm x 50.8 cm / King Size: 50.8 cm x 66.04 cm. It's a perfect choice for year-round comfort and cosiness. The simple style makes the pillowcase match all bedroom décor. Exquisite workmanship and meticulous sewing avoid loose stitching. Hidden zipper closure makes the pillowcase even more luxurious. Because it contains silk, it is recommended to wash it by hand first, hang it to dry, and not machine wash it. Only use low-temperature ironing.