The lightweight Nike Dri-FITŪ Element Half-Zip Running Top is the perfect base layer with its soft, sueded Dri-FITŪ fabric. Gussets at the underarms provide ventilation and maintain optimal temperature. Works great for both layering in colder weather or by itself on warm days. 360š reflectivity optimizes visibility in low light. Thumbholes are available to keep the sleeves in place on cold-weather runs. 88% polyester/12% spandex jersey. Imported.