Sizes XS & M available The details Non-adjustable straps, sweetheart neckline. Cotton Cinch is a lighter weight stretch fabric with a soft handfeel made with 88% organic cotton, 12% spandex. Machine wash cold, do not bleach, tumble dry low, do not iron, do not dry clean. More on fabric & care. The Nelle Knit Dress pairs well with the Gigi Strappy Mid Heel Sandal.