1. Smooth, cool, temperature regulator Silk lets the skin and hair glide very gently and ly over the pillowcase, reduces facial wrinkles, prevents dry/tangled hair and reduces hair loss. Silk is also a natural temperature regulator that adjusts our skin temperature to an optimal level and ensures deep sleep throughout the night. 2. 19 Momme Pure Mulberry Silk: 19 Momme silk pillowcase is the perfect choice to enter the world of silk. Our 19 Momme pillowcases are costeffective yet effective in treating common sleep/hair problems related to the face/hair and are the ultimate and simplest way to transform your daily sleep into a rejuvenating journey of comfort. 3. Washing and maintenance Please take care of your silk pillowcase according to silk washing instructions so that silk can give you the care. 4. Envelope closure, no slipping all night: 1 pair of silk pillowcases, beautiful box package, 19 Momme mulberry silk; Envelope closure for many years of use: Envelope closure is designed to prevent occasional scratching from metal/plastic zippers, so the silk lasts longer.