Rho SV Bottom Men's

Maximum-Warmth Merino Base Layer.

The Arc'teryx Rho SV Bottom is a heavyweight technical base layer built for the coldest conditions. Its 210gsm fleece fabric uses merino wool wrapped around a durable nylon core to deliver exceptional warmth, natural temperature regulation, and odor resistance, while standing up to repeated wear in high-friction zones. The close-to-body fit layers efficiently under shells and insulation, and added stretch ensures unrestricted movement. A low-profile thigh pocket adds practical storage, making the Rho SV ideal for skiing, mountaineering, and deep-winter travel where warmth and breathability are critical.