Men's Arc'teryx Rho Hybrid 1/2 Zip Long Sleeve Base Layer 5875-X6190 A performance base layer for active adventure in cold weather, the Rho Hybrid's Phasic™ AR II material stretches, provides thermal comfort, and is made with wicking fibres. Merino wool panels are placed in high-odour areas - something that's appreciated on multiday trips - the deep front zipper ventilates, and the streamlined fit layers easily and is patterned for maximum mobility. Features Trim fit makes it an ideal layering piece Construction Zippers & Fly Configuration Fabric Treatment Merrow stitch seam construction reduces seam size and irritation Deep front zipper for easy on and off, rapid ventilation Technical Features FC0-DWR (Durable Water Repellent) finish repels moisture Merino wool adds comfort and warmth Natural merino wool has anti-odour properties Patterning Phasic™ AR II fabric has a soft hand, stretch, thermal comfort and manages moisture Midweight warmth Articulated patterning for unrestricted mobility Design & Fit Collar Configuration Sustainability Trim fit keeps warmth close to the body Mid-height collar layers easily Contains wool certified to the Responsible Wool Standard (RWS): RWS is a voluntary program that helps sheep farmers meet consumer, retailer, and brand demands. The standard certifies they meet rigorous animal welfare and land management requirements. Men's Arc'teryx Rho Hybrid 1/2 Zip Long Sleeve Base Layer