Different climates in different environments/ freezing cold/ end-of-season temperature fluctuations.

Athletes who open and close their zippers many times due to intense physical activity in such environments always complained If only there was a garment that breathed like an organic body . . .The 3D ventilation system on the back of the garment is the answer to this problem. The special tube structure containing down provides high warmth retention and the ventilation system placed in the front and back of the garment promotes internal air flow. Ventilation also expels excess humidity, enabling the body to stay dry at all times.