100% polyester. This blouse has a sophisticated design with a flowing material. It features details like folded cuffs, walnut buttons, hidden buttons on the front, and gathers, making it a well-crafted piece despite its affordable price. It's lined, so your undergarments won't be visible, but the sleeves have a sheer look, which is fashionable. The pattern looks like Liberty fabric at first glance. It's a favorite, with a mature floral pattern in green and black.