The North Face Men's Ventrix Hoodie is an advanced thermal regulator designed for high-output activities in variable weather. This active layer features strategically placed ventilation in the insulation for an optimal balance between warmth and breathability. These laser cut pinhole vents open to release excess body heat while on the move, and keep shut to trap heat while stationary. Both the face fabric and insulation incorporate stretchy materials to accommodate your full range of motion as you climb on.