Lightweight performance for peak performance in mild temperatures. Now with a slimmer silhouette: This long-sleeve running shirt is made from Odlo's incredibly lightweight and breathable Chill-Tec fabric, which is recycled. This ensures maximum cooling during early morning training sessions or in transitional weather. The shirt is completed with bonded side seams, laser-cut ventilation zones, and reflective details. A true high performer in various weather conditions. Run lighter and faster, dry quickly, incredibly lightweight: performance running apparel that leaves all others behind.