Alexandria Silk PillowcaseOur deluxe silk pillowcases will ensure the most beautiful nights sleep and have you waking up rested, gorgeous, and with your hair sleek and shiny. They are naturally hypoallergenic and prevent sleep wrinkles. Silk is an insulating fabric, therefore it will keep you warm in winters and fresh in the summertime. Composition: 100% Silk. Silk, one of the most luxurious natural fibers, has been praised since ancient times for its ability to slow down the