Spanx XL Dress Perfect Fitted Dress in Classic Black Sleeveless Sheath NWTNWT price includes shipping style no. 20380R perfect fitted dress Crew neck back center slit back zipper 68% Rayon, 28% Nylon, 4% Elastane Ponte; Lining: 66% Rayon, 30% Nylon, 4% Elastane Spanx Style #: 20380R Designed using smoothing premium fabric, this dress is versatile and easy to dress up or down for any occasion. Sleeveless and designed to gently skim the body without being skin-tight. 4-way stretch. Back zip.