Shell: 95% Polyester, 5% Spandex. Contrast: 100% Nylon. This stretchy plush velvet dress starts with a darted sleeveless bodice and a sophisticated mock neckline. The bottom part of dress is not as stretchy since the ruffles are sewed. Size large but fits like a medium unless you are short. I’m 5’7 and a size medium for reference so I sized up to a large for length.