100% Mulberry Silk: This silk pillowcases are all made of 100% natural silk, it is an absolute must for anyone in search of a beautiful night's sleep. Silk Pillowcase for Hair and Skin: Silk nourish the skin, prevent skin aging, clean the skin. Especially for sensitive skin and delicate skin. Also can keep the hair supple and smooth. Natural Temperature Regulator: Pure mulberry silk is a natural temperature regulator which is skin-friendly and moisture to help feel cool in summer and warm in winter, you will enjoy sweet dreams. Premium Quality: Both side 19 Momme 600 thread count, soft, breathable, cool,smooth. Exquisite craftmanship of the neat stitches,with hidden zipper design without move around. Size and Color: Multiple colors and sizes for your choice. Each special designed box have 2 pack Pillowcases , can be a great gift for any occasion like Mother's Day, Christmas etc.