The difference between a dream day and disaster boils down to how well you can keep from boiling up. Adapt to the highs and lows of elevation and exertion with a powerful pairing of Mountain Hardwear Airmesh™ technology and Primaloft® Gold ACTIVE insulation. The Kor Alloy™ Tight off-loads excess body heat and moisture on the ascent and effectively insulates under your favorite shell on the descent. This highly-breathable mid-layer delivers unparalleled performance to enhance all backcountry pursuits.

• Lightweight and breathable stretch ripstop Pertex® Quantum Air fabric
• Strategically mapped hybrid of AirMesh™ lining and Primaloft® Gold Active for the perfect combination of warmth and breathability
• Strategically mapped stretch woven panels for form-fitting function
• Two secure zippered hand pockets
• Soft elastic waistband with adjustable drawcord for a perfect fit