The ASICS Men's Metarun Short Sleeve Top is built for runs where staying comfortable makes all the difference. The lightweight knit fabric feels easy from the first mile, while ACTIBREEZE™ technology helps air move through the areas that heat up most as your run goes on. Thoughtful body-mapped ventilation keeps airflow where you need it, and smooth side seam construction helps reduce irritation over longer efforts. With shoulder seams designed to move naturally with your stride, the Metarun Short Sleeve fades into the background so you can stay focused on your pace, not your shirt. Subtle reflective details add visibility when your run starts early or stretches late.