It is always the major concern of outdoor apparel, no one wants extra loading provided that the water, food and safety equipment have already given you the heavy lifting.
A high-performance all-weather jacket can always keep you dry and cozy even in the worst condition. Breathability is crucial for an outdoor sport jacket, it allows your body moisture escape and keep us dry.
As an outdoor sport jacket, it is important to offer great fitting and high mobility. No extra weight from extra fabric, and eliminate the wind block that may affect the performance of trail runner.