lightweight comfort that moves with you. the nike dri-fit knit women's running tank top features soft, sweat-wicking fabric for lasting comfort on your run.. stay dry. soft, high-stretch knit material helps you stay dry and comfortable by wicking sweat away to the fabric's surface, where it quickly evaporates.. lightweight comfort. the shirt's seamless construction offers a lightweight, comfortable feel with reduced irritation caused by chafing.. breathability. ventilation zones are knit into the fabric, enhancing breathability to help keep you cool from the first mile to the last.. more benefits. longer length to help prevent the top from riding up while running. racerback for enhanced range of motion. cord management loop on the center-back neck to help keep cords out of the way. reflective elements enhance visibility in low light. product details. fabric: dri-fit 52% polyester/48% nylon. machine wash.