Fit and Design: - Regular fit running shirt - Soft and smooth fabric lets you move freely on every run - Collar is designed with fewer seams for a smooth feel - Easily adjusts at the neck and sleeves so you can stay comfortable as you heat up or cool down - 1/2 zip design lets you adjust your airflow and coverage - Thumbholes at the sleeves helps cover your hands in a contoured design for extra warmth when you need it Technology: - Sweat-wicking Nike® Dri-FIT fabric helps keep you cool and dry - Reflective elements enhance visibility in low-light conditions