The silk pillowcase is highly lustrous and has a smooth touch. Combining thermoregulation, not too hot or cold, fits your body temperature. Zipper closure can fix the pillow and exchange insert easily. Strictly according to the size of the product, it perfectly fits the four corners of the pillow. Our silk is from silkworms that exist freely in wild forests, only extracting the lowest fat-content threads in the middle of silkworm cocoons. Long-term exposure to the face helps to smooth out the signs of aging. No additives are added to the pillowcase. Silk is known for protecting hair from pulling. Protect hair from friction, frizz, and bed head, with no tangling every morning.