METWAY Women's Tank Tops Comfy Fit Swing Neck Silk Sleeveless Shirts Silk,100% natural mulberry silk satin,pure protein fiber. Special neckline design to make the collarbone look thinner and sexy Supersoft, smoothly,absorbent,breathable of silk fabrics Antistatic and inhibiting bacteria function of silk fabrics. take care of your body Size update for the regular size(March 2018),please in accordance with the following size details (inches): Small-bust:35"/37" Medium-bust:37"/40" Large-bust:40"/43"