Helmut Lang Open-back Ribbed Dress is a slim-fit ribbed knit dress with an open back, designed for polished day-to-night wear. Key attributes: Purple | Wool | Crewneck | Long sleeves | Open back | Ribbed knit | Softly flared skirt | Dimensions & fit: Slim fit | Fits true to size | Model is 180 cm tall and wears size S | Composition & care: 100% Wool | Dry clean only; avoid trichloroethylene.