Our Nike Epic Women's Training Track Jacket is good for warm-ups or cool downs at track and field and cross country meets as well as road races that keep your athletes comfortable in wearing it. The full-length zipper allows for easy ventilation while zippered hand pockets provide storage for small essentials. The fabric used for the main body is 100% polyester with Moisture-wicking fabric and Overlock seams. The quality is very good because the materials are carefully chosen and the innovative new styles are wear-tested before they go out to retail, to ensure that it has high quality.