100% Silk Premium Pillowcase 1 pillowcase per package Retail packaging is a matte gusseted pillowbox with gold foil. PVC lined window on the front of the package allows customers to see the exact color while protecting the pillowcase. Product information on the back in English, French (Canadian) and Spanish. Fold over envelope enclosure ensures the pillow will not slip out. 22mm premium mulberry silk on both sides of the pillowcase. OEKO-TEX certified (Certification HKWO 055875) ensures every part of this pillowcase has been made with materials that exceed international standards for safety. This includes the processing and dying of the silk. Machine wash gentle cycle, dry low or lay flat.