NIKE Women's Dri-Fit Essential Crop Running Tights polyester-blend Dri-FIT fabric wicks sweat away to keep you dry and comfortable. / Dri-FIT 92% polyester/8% spandex. Back panel mesh for ventilation. Elastic waistband with drawcord for personalized fit. Gusset lining helps limit chafing while wicking sweat. Flatlock seams move smoothly against your skin.