Our pillowcases are made with the highest quality and standards in mind. They are crafted from the finest 100% pure Mulberry silk, with a thickness of 22 Momme, and are standard queen size, measuring 20" x 30". Our pillowcases offer various benefits, including anti-aging properties, moisture retention, antibacterial properties, hypoallergenic materials, reduced friction, decreased hair breakage, and temperature regulation. Don't just take our word for it. Our pillowcases are STANDARD 100 by OEKO-TEX® certified. You will feel the difference immediately from the moment you lay your head on our pillowcase. Details: 100% Mulberry Silk 6A Grade Quality - Certified OEKO-TEX® STANDARD 100. Standard pillowcase - 20" x 30" (51cm x 76cm). Envelope opening design.