70% Rayon, 26% Nylon, 4% Spandex Bodycon fit Bodice lined only Strapless with back zipper Boning with corset waist Hits at the ankle Vent at back hem Body length on size 18 is 56" Stretch heavy knit ponte Machine wash cold gentle cycle with like colors. Only non-chlorine bleach when needed. Do not tumble dry. Lay flat to dry. Cool iron as needed.