The new AEROCROSS Self Layer has been specially developed for active people. The innovative bio-based COOLTH_SL fabric and Flowtunnels technology ensure excellent ventilation and maximum breathability. Whether you're running or training, the advanced properties of this outer layer will keep you cool and dry so you can perform at your best. Lightweight and durable, the Aerocross is a must-have for anyone looking for high-performance sportswear.