The Alpine Series Pisa is packable, breathable, and warm for its weight. Polartec Alpha Direct fleece is moisture-wicking when you're moving and warm when you're not. It's quick-drying, breathable, and packable. A ripstop nylon outer increases wind resistance, and its DWR finish improves moisture repellency. Our Alpine Series is the direct result of our partnership with the New Zealand Alpine Team (NZAT). This team of elite mountaineers demand premium lightweight equipment that doesn't compromise performance. The main and lining fabrics are bluesign approved, which means they were manufactured with the responsible use of resources.