SKIMS Long Sleeve Dress in Onyx - Size XS Perfect condition - NWT The iconic bestselling Soft Lounge dress you know and love, but now with sleeves. - Slinky silhouette, ultra-flattering square neckline, drapey long ribbed slip - 91% Modal / 9% Elastane - Machine wash cold with like colors, lay flat to dry - True to size. Model is wearing size S