KLIM OVERRIDE JACKETThe insulated Override Jacket is a mid layer with exceptional breathability, which avoids causing a stuffy sweaty feeling without introducing so much airflow that body heat escapes. The result is a highly breathable mid layer suited for high output physical activity and adds warmth to any outer shell. In fact, we had to stop employees from taking home all of our pre production testing jackets theyre that good. HIGH PERFORMANCE BREATHABLE MID LAYER