Both Sides 100% Grade 6a+ Mulberry Silk, 23 Momme 【23Momme Natural MULBERRY SILK】Promeed pure mulberry silk pillowcases feature exceptional smoothness and premium moisture-wicking performance, designed for a comfortable sleep experience. Available in a versatile range of sizes and configurations to meet all your bedding needs 【OEKO-TEX STANDARD 100 CERTIFIED】Promeed 23 Momme Mulberry Silk Pillowcase is crafted from premium Grade 6A+ mulberry silk, featuring a soft, cooling feel with non-absorbent, breathable properties. It helps reduce skin irritation and minimize sleep-related facial creases for a smoother complexion 【FRIZZ-FREE HEALTHY HAIR & HYDRATED SKIN】Soft and smooth mulberry silk pillowcases are designed for a luxurious, skin-friendly sleep experience. Promeed mulberry silk pillowcase minimizes friction and tugging, helps retain the natural moisture of your hair and skin, and promotes a hydrated, frizz-free appearance 【TEMPERATURE REGULATING】According to Good Housekeeping testers, PROMEED UPGRADED 23 MOMME SILK is strong and shrink-resistant in their Lab's durability tests. It also proved to be sweat-wicking in moisture management tests, which means sleeping in real silk pillowcase will help to reduce excessive sweating and therefore slow down the unwanted hot flushes 【Easy Care】Machine washable on gentle cycle. Promeed 3rd Generation Silk Pillowcases boast lasting durability and stay smooth to the touch even after repeated washes. Detailed care instructions are included in the package Promeed Upgraded Third Generation Mulberry Silk Pillowcase Fabric: 100% Grade 6A+ Silk Charmeuse, 23 Momme Closure: Invisible Hidden Zipper Features: Stitching reduced by 25%, minimize the friction betweeen human body and pillowcase In The Package: Silk Pillow Case x 1, Quality Laundry Bag x 1, Silk Fabric Sample for Burn Test x 1 Certification: OEKO-Tex Standard 100 Certification (Insures that the fabric has no harmful chemicals.)