Give it your best shot with the Nike Dri-FIT Miler sleeveless top. This beginner runner's model combines high performance, light weight and freedom of movement. This product is made with at least 50% recycled polyester fiber. The all-new wavy yarn fabric promotes airflow to help you stay cool. The soft feel helps reduce the risk of irritation during your run. Shoulder seams are rolled back for greater freedom of movement in the arms. The slightly curved hem enhances back protection, and its side slits allow you to move freely. Dri-FIT technology keeps you dry and comfortable.