The Ronhill Aspiration Running Vest is manufactured with Vapourlite fabric, designed with a lightweight knitted construction. It draws moisture away to the outer surface, which then evaporates into the air, enhancing comfort whilst running. Garments manufactured from Vapourlite are breathable and quick-drying. A lightweight mesh works with the Vapourlite fabric to allow further ventilation and breathability, helping to keep you at an optimum temperature and comfort level. With flat-lock seams, this top reduces chafing and keeps you comfortable during training.