Reformation Jeans Rou Midi Knit Dress. Black, size Large. Good condition, no flaws. The details - Non-adjustable straps, scoop neckline. - Backless. - Eco Cinch is a light weight, soft, stretch jersey fabric - 88% TENCEL™ lyocell, 12% spandex. Hand wash + dry flat. More on fabric & care. The fit - Designed to be fitted throughout with a full skirt. See our size & fit guide.