Layer up in the Nike Pacer Women's 1/2-Zip Running Top. Soft, stretchy breathable fabric brings comfort to the most challenging of routes, while sweat-wicking technology helps keep you cool as you press on. Dri-FIT technology helps you stay dry and comfortable. Thumbholes help keep sleeves in place and provide warmth. Slightly curved hem extends coverage down your back. Circular-knit fabric creates 2 layers of mesh, enhancing breathability. 1/2-zip offers customizable ventilation. 100% polyester.