Silk pillowcase botanically dyed with local flowers, plants, and natural extracts. Standard size with envelope enclosure. Standard size. 16 mm, 22 momme .100% Mulberry Silk. Sustainably sourced silk and certified. Silk is the best material for your pillowcase! It's the one fabric that has the most contact with your face, so make sure it is chemical-free (naturally dyed) and beneficial to your health! Our silk products are Business Social Compliance Initiative (BSCI Certification) The BSCI is the European social monitoring system for ethical sourcing initiated by the Brussels-based Foreign Trade Association, and OEKO-Tex Standard. **Each item is a one-of-a-kind and handmade. The actual item will vary from photograph** Imperfections and variations are part of the process and make these pieces unique. Sleeping on silk... Anti-aging (reduces fine lines) Reduces hair breakage Naturally hypoallergenic Helps your skin retain moisture Hand wash with cold water."