Shell:100% viscose Lining: 100% polyester.Hand wash.Partially lined.Hidden back zipper closure.Adjustable shoulder straps with lace-up back tie closure Cowl neckline.Lustrous satin fabric with ruched detail.Model 1 is wearing size US 2 Model 2 is wearing size US 6 Model 3 is wearing size US 10.The Lace Back Maxi Dress from Shona Joy's La Lune collection is a satin dress with a cowl neckline and lace-up back detailing. It?s a timeless classic!