PURE SILK SLIP PILLOWCASE WITH INVISIBLE ZIPPER ANTI AGING ANTI SLEEP CREASE ANTI BED HEAD  BRAND NEW IN THE BOX NEVER USED OR DAMAGED BESTSELLER SLIP IS THE #1 PREFERRED BRAND OF SILK PILLOWCASES BY DERMATOLOGISTS. FOR THEIR PATIENTS, THEMSELVES, AND THEIR FAMILIES. The beauty secret of celebrity hairstylists, dermatologists and beauty experts. Includes 1 x Queen International Standard Pillowcase (20” x 30” | 51cm x 76cm) Machine washable THE SLIPSILK™ DIFFERENCE Slipsilk™ is specially-commissioned and made to our exacting standards, developed and refined over ten years to provide the ultimate combination of shine, thickness, softness and durability. We use the highest grade (6A) long fiber mulberry silk, with a thickness of 22 momme and enforce the strictest quality guidelines, including non toxic dyes. Slipsilk™ has been scientifically tested by an independent third-party lab and shown to significantly reduce friction and absorb significantly less face cream. *Compared to widely-available cotton pillowcases with a 220-360 thread count.