Women's Turtleneck Batwing Sleeve Asymmetrical Knit Poncho. The material is soft and comfy. Polyester 100% The polyester fabric is designed to last, providing a comfortable fit that won't stretch out or fade over time. The knit fabric features a unique and stylish turtleneck and batwing sleeve design, all finished in a high-quality polyester material that's lightweight enough to keep you comfortable throughout the day.