MSSilk Delicate Jacquard Weave 16 Momme All Mulberry Silk Charmeuse Pillowcase -Envelope Type with Border (Single Standard 20&rsquo;&rsquo; x 30&rsquo;&rsquo;, White) NATURAL FIBER: Not a plain satin or polyester charmeuse, it is made of pure 16 momme mulberry silk on both sides, which is widely acknowledged as 'human's secondary skin' and lauded as 'Queen of fibers'. MINIMAL IRRITATION: Good for keeping wrinkles at bay, no more morning face marks; stop you waking up with frizzy hair, and reduce hair breakage. BREATHABLE: Noticeable improvement of sleep quality due to its multi-porous fiber structure, it is cool and comfortable but not too cold, so you can get to sleep easier. NO NOISE: Air can pass through the material quickly thus there is no stiff material sound; great for people not get much sleep. SIZE: Width: 20 (50cm), Length: 30 (75cm); Border width: 1.2 (3cm); Width of the fold in flap is 5.9 (15cm).