M MISSONI spacedyed knit dress boat neck S M

Rich blue and green spacedyed dress from M by Missoni. Pops on over the head, with bateau neckline. No fabric content tag, so I'm not sure what this is made of. My guess is a silk/viscose blend? Not wool, not cotton, not polyester. Tagged as 46, which generally is a US M. Shown on a size 4 mannequin with a little wiggle room. This is ribbed and has great stretch. Before stretch, it's 39/28/34" before stretch, 38.5" long. Great condition, clean and ready to wear. (O5)