Fit & Design:

• Base layer top from Arc'teryx is highly stretchy and pairs a durable, smooth face with a soft, brushed interior for warmth and wicking on cold, on-the-move days
• Polartec® Power Stretch® Pro fabric with excellent stretch and articulated patterning allows for unrestricted freedom of movement
• Durable nylon outer has a smooth face for comfortable layering; interior brushed fleece traps in heat, wicks moisture and feels soft next to the skin
• Tall collar extends warmth; deep front zipper lets you dump heat with rapid ventilation and allows easier on/off
• Zippered chest pocket
• Trim fit keeps warmth close to the body and makes it easy to wear under mid and outer layers