Men's Qiflow Ventilated Running Long SleeveStay Cooler. Run Freer. Dry Faster Designed for high output road and trail runs, the Qiflow Ventilated LS uses large engineered ventilation mesh to keep your body cooler, your skin drier, and your movement friction free all at an ultralight weight that moves effortlessly with you. Key Benefits Stay cooler on every run with large ventilation zones that release heat fast. Feel fresher for longer thanks to enhanced airflow in high sweat areas. Stay dry