We will send a small piece sample with each order for you to identify. benifit Moisturize Skin Against Dryness Silk fabric has good moisture absorption, which can absorb and release moisture in humid environments,and give your skin a youthful feel and smooth touch. Sensitive Skin Ideal Choice The natural fiber silk is known for its superior gentleness on the skin in comparison to synthetic fibers. Relieve Skin Discomfort Wearing and Sleeping with silk fabric can increase the comfort of the body A Good Sleep Silk fabric has excellent breathability, helping to maintain a suitable temperature for the body, avoiding excessive sweating, and also reducing skin discomfort. How To Identify Silk? Burning silk with have the smell of buring hair,and the black particles produced can be crushed into power with your finger. We will send a small piece sample with each order for you to identify.