Arc'teryxRho SV Zip Neck

Our warmest base layer top, designed for cold weather and easy wear. The Rho SV Zip Neck is our warmest, most technical base layer yet—constructed to keep you comfortable without creating bulk. The synthetic, hollow-core fleece is breathable during high-output ascents and descents, while the zip-neck and extended collar provide an option for extra ventilation or additional coverage, depending on what the conditions call for. Full Product Features Technical features - Warm and comfortable Construction - 210gsm hollow-core fleece has an exceptional warmth-to-weight ratio and stays soft to reduce chafing during high-output movement Design & Fit - Fitted, with articulated patterning for mobility and comfort Pocket configuration - Laminated chest pocket Sustainability - Body - recycled content - PFAS (Per- and polyfluoroalkyl substances) Compliant - Contrast - FC0 DWR, recycled content Zippers & Fly configuration - Full front zip Materials - Contrast: Recycled Nylon/Elastane, FC0 DWR - 88% Nylon, 12% Elastane - Body: Recycled Octa x Solotex Raschel Anti-shed Fleece, 210gsm - 100% Polyester - Origin of fabric: JAPAN - Origin of dyeing: JAPAN - Origin of Manufacture: VIETNAM - May release plastic microfibres into the environment when washing