comfort plus performance. the nike premium silk jersey long-sleeve women's running top has a featherweight design made from dri-fit fabric. the perforations at the sides deliver targeted breathability on your run.. benefits. dri-fit fabric to wick sweat away and help keep you dry and comfortable. rib scoop neck with interior taping for comfort. laser-cut perforations at sides for enhanced breathability. small zip pocket at side for key storage. product details. fabric: dri-fit 54% silk/46% polyester. machine wash.