"What Our Gearhead® Experts Are Saying:""This jacket is all about adaptability. The PrimaLoft® Gold Active+ insulation breathes incredibly well, keeping me warm without overheating during tough climbs. The Thermic™ stretch fleece side panels add mobility, and the Pertex® Quantum Air fabric blocks wind while still feeling airy. Whether as a midlayer or a standalone piece, it’s my go-to for high-energy mountain missions.""When every layer matters in the mountains, the Xenair Alpine Flex Jacket stands out with its perfect balance of warmth, breathability, and movement. Designed for demanding ascents, it combines lightweight PrimaLoft® Gold Active+ insulation with Thermic™ stretch fleece side panels for ultimate versatility. Whether we’re pushing for the summit or navigating unpredictable weather, this layer adapts to our energy output, keeping us comfortable from start to finish. The Pertex® Quantum Air outer fabric fends off wind while remaining highly breathable, ensuring we stay warm without overheating. Thoughtful details like the under-helmet hood, articulated sleeves, and packable design make this jacket an essential companion for technical climbs and backcountry pursuits. From dawn patrol starts to exposed ridgelines, the Xenair Alpine Flex is built for those who move fast in the mountains."