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The ultimate lightweight insulating layer is here. The Ortovox Swisswool Piz Boe Jacket is one of our favorite layers to throw on when ski touring. Featuring Pertex Quantum fabric, the jacket is wind and water-resistant to keep us comfortable in mountain conditions. The Swisswool insulation combines Merino wool and synthetic fiber to make lightweight but lofty insulation to keep us warm. The strategically placed Merino Airsolation Stretch panels mix four-way stretch fabric and Merino wool to bring us warmth and freedom of movement in one jacket. Two backpack-compatible, zippered chest pockets ensure all our essentials and gear are close by for easy access, while the fixed hood with elastic lining keeps us covered when the weather changes.