Silk Pillowcase with Egyptian Cotton Percale Underside and Hidden Zipper Closure - Queen (20" x 30") - White 100% Silk / Reverse to 100% Cotton This pillowcase offers the best of both fabric worlds. One side is 100% pure silk and the other side is 100% Egyptian Cotton Percale. Both sides are extremely cool and comfortable. COLOR: White TOPSIDE: Made with 19 Momme (600 TC) 100% Grade A Mulberry Long Strand Silk. UNDERSIDE: Made with 100% Egyptian 300 TC Cotton Percale. FEATURES: Hidden Zipper Style Closure Hide Pillow. Package Includes: One (1) Pillowcase OEKO-TEX Certified (Standard 100) To Be Free Of Chemicals And Naturally Dyed With No Color Shading Or Fading. CARE INSTRUCTIONS: Hand or Machine Wash in Cold Water on Gentle Cycle. Hang to Dry. Cool Iron. Do Not Bleach. Can Also Be Dry Cleaned.