Details Made from moisture wicking Torrent™ brushed polyester blend fabric, the Women's Rho LT Zip Top is a comfortable, warm base layer for lower output activities in cool temperatures. It offers performance stretch, effective thermal regulation, and has an excellent feel next to the skin. The women's specific design optimizes the next to skin fit, articulated patterning and gusseted underarms add freedom of movement, flatlock seams minimize irritation, the tall collar seals in warmth, and the deep zip neck opens easily for rapid ventilation. Material Torrent™ 190 with Polygiene® 84% polyester, 16% elastane Fit Next-to-skin Details Activity: All Round Rho: Thermally efficient base layer with excellent moisture management properties. Has stretch comfort. Lightweight: High performance, minimalist design that is durable for its weight. Arc'teryx Essentials: Versatile high performance designs for diverse activities and conditions. Breathable Material: Allows moisture vapor to escape, helping regulate temperature and elevating comfort inside garment. Weight 185 g / 6.5 oz Arc'teryx Rho LT Zip Neck Women's