Fabric: Lightweight, non-stretch silk satin. Reformation is part of The Climate Pledge, a commitment to reaching net-zero carbon emissions by 2040. Smocked elastic and hidden zip at back. Slightly scooped neckline. Shell: 100% silk. Dry clean. Made in the USA of imported materials. Measurements: Measurements from size 2 Length: 9.75in / 25.0cm, from center back