The trollveggen Powerstretch Pro Zip Hoodie is a flexible and comfy insulation layer made for alpine adventures where both the altitude and temperature tend to switch between high and low. The unique mix of polyester/wool blend and Powerstretch Pro provides the product with great properties; the polyester/wool under the arms and in the back has a great thermal regulation, odor reduction and will keep you warm even when wet. The highly durable Powerstretch Pro material will withstand a great deal of wear and tear and provides quick-drying properties. It has a snug and ergonomic fit to maximize mobility in steep and di?cult terrain.