Emproved Sleeveless Long Polo Dress-OysterStyle SP2358. Emproved is fashion that's committed to sustainability and a greener lifestyle. Our core principles start with inspiring and creating a responsible collection. We source organic fibres and recycle fabrics, because we understand that global change starts at the local level, one garment at a time. 77% Viscose (Lengzing Ecovero), 23% Nylon. Responsibly made in China. Washing Instructions: Hand or machine wash in cold water. Do not bleach.