M's R1 Air Zip Neck - 40246 - Treeline Green Size:S Featuring a heavyweight

Featuring a heavyweight

warm-to-touch backer fabric eliminates the need for a liner

Center-front zipper has an interior storm flap and zipper garage at chin for next-to-skin comfort

Side Zip Closure

• Webbing - Quick-dry earth-friendly Unifi REPREVE recycled polyester webbing supports your foot and stands up to abuse

M's R1 Air Zip Neck - 40246 - Treeline Green Size:S Featuring a heavyweightEngineered for active pursuits, the M's R1 Air Zip Neck delivers lightweight warmth without bulk. The breathable fabric wicks moisture and regulates temperature across changing conditions, making it ideal for layering under jackets or wearing solo during moderate activity. The half zip design offers quick ventilation control, while the fitted cut ensures freedom of movement. Perfect for trail running, climbing, or everyday performance wear.