Natural Mulberry Silk, both side 19 Momme. PRODUCT FEATURES: High-quality silk can help prevent hair from becoming knotted and matted, and it can reduce facial wrinkles. PACKAGE INCLUDE: 1 x King (20 x 36 Inches) Pillowcase (Pillows are not included.) EASY CARE: Best to clean by hand. Washing temperature should be lower than 30 degrees Celsius. Ironing temperature below 110 degrees Celsius. Hang in the shade to dry. Gentle dry cleaning. Do not bleach.