100% Mulberry Silk, 25mmImportedGOOD HOUSEKEEPING TRIED AND TESTED: The experts at Good Housekeeping Magazine have labeled our 25 Momme 100% Pure Mulberry Silk Pillowcase a Winner and All-Star Standout.LUXURIOUS BEDDING: Our pillowcase is made of 100% long strand, Grade 6A Pure Mulberry Silk. There is silk on BOTH sides of the pillowcase! The density of silk is measured by momme. The higher the momme, the more silk. We have added a unique side entry that is slightly offset. The pillowcase can be used as both a sham or pillowcase. An oversized, envelope flap ensures the pillow will remain securely inside your pillowcase.EASY CARE INSTRUCTIONS: Dry clean or hand wash are the best methods. You can also machine by following these steps: turn inside out or use a mesh wash bag, wash in cold water on the hand-wash or delicate cycle. Use mild detergent. DO NOT use fabric softeners. Place in dryer on air-only cycle for 10 minutes and then lay flat to finish drying.VARIETY OF SIZES: Our pillowcase comes in three sizes: Standard, Queen and King. Standard size measures 20 x 26. Queen size measures 20 x 30. King size measures 20 x 36.