The slim, aerodynamic fit hugs the upper body closely to reduce creasing and air resistance. Elastic, wind- and waterproof materials with BIO-DWR treatment ensure a balanced combination of comfort, weather protection, and breathability. Special flat pocket construction for safe yet easily accessible storage of valuables and energy bars. Flat, concealed front zipper for a clean look and aerodynamics. Stylish reflective elements on the back, front, and shoulders for 360-degree visibility in low-light conditions.