The Innovative AERO™ KNIT construction traps micro air pockets so it will still keep you warm yet is 17% lighter for the ultimate in temperature regulation. Featuring flat seam construction for reduced bulk, comfort, and ease of layering.

• Constructed of our exclusive AERO™ KNIT fabric - a softer, lighter, warmer Merino wool 
• AERO™ KNIT provides the temperature-regulating abilities, durability, and odor resistance of Merino with a touch of nylon added for strength
• Articulated design for superior mobility and fit
• DYNAMIK™ stitching for increased stretch and strength
• 1/4 zip design for temperature control
• Ideal for layering