Eco///Bamboo (Rayon from Bamboo): 66% Bamboo (Rayon from Bamboo) / 28% Cotton / 6% Spandex. Similar to the men's version, with sustainably harvested Tagua nut buttons, in a flattering ladies' fit. With a small amount of stretch, this polo will move and flow with you, and is easy to care for. Carefully tailored, perfectly sewn. This item is in-stock in three colors, with a matching men's version. This fabric is Oeko-Tex Standard 100 certified. Sizes: XS to XL.