Posse Iris Dress in Ivory. - size M (also in L, S, XL, XS, XXS) Posse Iris Dress in Ivory. - size M (also in L, S, XL, XS, XXS) 72% viscose 28% polyester. Made in China. Hand wash. Unlined. Pull on styling. PSSE-WD6. PS920-BNE. Shop the latest in fashion from Posse