90% Mulberry Silk + 10% Spandex-Stretchable, Better Fit the Body Shape and Wrinkle Free. 100% Silk Lining Sleeveless Regular FitSimple and basic design, with a built-in bra, you can put it on directly, which greatly reduces the time of putting on clothes. It is versatile, suitable for different occasions, wearing a blazer and pants at the workplace, pair it with jeans for a casual occasion. It is always your go-to choice.