R1 Air Zip Neck – Women's

Built for high-output aerobic efforts where you need warmth without weight, the R1 Air Zip Neck is our top pick for women who run or hike hard in variable conditions. Its open-knit Polartec Power Air fabric traps heat while moving moisture and air more efficiently than a standard fleece. The zip neck lets you vent fast when the climb gets serious.

• Polartec Power Air open-knit construction traps warmth without the bulk of traditional fleece
• Encapsulated fiber structure reduces pilling and keeps the fabric performing wash after wash
• Zip neck gives you quick venting control on hard climbs or fast descents
• Cuts well under a shell or pack harness — minimal seams, low-profile collar stays out of the way
• Available in Black — a clean, versatile choice that works from the trailhead to post-run errands