More Details Derek Lam Long-Sleeve Cady Mini Dress, Safety Orange Details Derek Lam cady mini dress. Approx. 35.5"L down center back. Jewel neckline; keyhole detail with button closure. Long sleeves; vented cuffs. Column silhouette. Straight hem. Hidden back zip. Viscose; lining, silk. Dry clean. Imported of Italian materials.