Keeps you performing under all conditions – under this premise, this product has been developed, starting with an ergonomic cut and finishing with a ventilation system on the back and under the arms. Special protection against wind and weather is assured by the bionic, closed symbionic™ membrane. It provides exceptional climate comfort inside, due to the transportation of water vapor and sweat droplets to the outside, enhanced by body heat. Unseen function and tangible comfort ensures the highly elastic 3D-Bernoulli Insert on the back, keeping the body at an optimal temperature due to a defined airflow.