Details The Arc'teryx men's Rho LT is a comfortable, warm base layer for lower output activities in cool temperatures. The moisture wicking Torrent™ brushed polyester blend fabric delivers performance stretch and effective thermal regulation with an excellent feel next to the skin. 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 Flatlock construction improves next-to-skin comfort Details Activity: All Round-High performance weather protection and materials, emphasizing versatility for multiple activities 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. Laminated chest pocket with laminated zip Weight 215g / 7.6oz Arc'teryx Rho LT Zip Neck Men's