When progressing higher and further at alpine altitudes and above, staying warm and dry is vital. That's where the active insulation layer comes in. Ventrix™ dynamic venting insulation means the L3 Ventrix Hooded Jacket delivers both warmth and efficient moisture management. Extra insulation over the body - where you need it most - and less on the sleeves, together with perforations over the spine help prevent overheating.  It's also built to better withstand brushes with rock thanks to the durable recycled nylon weave. Stretch, the cut itself and underarm gussets ensure full climbing mobility. And seamless shoulders reduce the chance of chafing and discomfort when carrying a heavy approach backpack. Wear it while you belay, while you climb and while you repel. Summit Series™ layers all work together for optimum performance in terms of breathability, insulation, weather resistance and moisture management.