The Backcountry Highliner PrimaLoft Air - Perm Fleece Hoodie is built for high - mountain adventures and everyday exploration. Whether we're trekking along ridgelines or taking in summit views, this lightweight hoodie offers breathable comfort and easy packability, making it essential for year - round pursuits. Crafted from PrimaLoft Active Evolve fleece, this hoodie uses 100 % polyester to provide thermoregulating warmth that manages moisture and feels soft against the skin. Stretch knit capabilities ensure a natural range of motion, while thumbholes and a full - coverage hood offer extra protection when the wind picks up. When the sun comes out, this layer packs down into a hidden neck pocket with a convenient carry tab, making it easy to stash in your pack until it's needed again.