The Nike Core Sphere Top is a long-sleeve, half-zip running top with a self fabric collar. Shaped bottom hem with ergonomic side seams offers full range of motion. Reflective taping at the lower sleeve and reflective loop cord management at the center back neck. Reflective Swoosh design trademark heat transfer at the left chest. Sphere Dry™ 92% polyester/8% spandex circular knit mesh with Dri-FIT® 100% polyester circular knit mesh side panels. Imported.