Silk is a natural substance made from protein-rich fibers that can help to distribute the body's natural oils evenly and leave the skin soft and moisturized. It is also hypoallergenic, which means that those with eczema, asthma or allergies have an easier time sleeping. Silk breathes and is cooling, if your body temperature rises at night, the silk sheet can keep your skin fresh and more comfortable. We use only high quality 22 momme Mulberry silk and follow the strictest requirements in design and production.