53% viscose, 43% rayon. I am not sure the name of the style of the dress. Pit to pit: 15” Length: 47” Features: midi length, elasticized back, hidden zipper with hook & eye closure, no slit, unlined, gel tape along inside of bust, boning in sides of dress, elastic at top of shoulder, classic, minimalist, little black dress. Condition: excellent preowned condition Feel free to ask any questions.