NIKE Sphere Long Sleeve Half Zip Running Top Nike Sphere React Cool fabric - technology helps to manage the body temperature by wicking Zip back pocket - to keep in your valuables. Half Zip neckline - for increased breathability meaning your performance won't be affected Cord management system - to hold the headphone wire to your MP3 player securely to reduce Bonded Flat reflective taping - for greater visibilty on those darker nights