What Our Gearhead(R) Experts Are Saying:"This fleece is my go-to mid-layer for cold-weather activities. The Polartec(R) Power Stretch(R) Pro fabric moves with me while keeping me warm and wicking away moisture. The slim fit makes it perfect for layering under a hardshell, but it's also great on its own for hikes and casual wear. The abrasion-resistant outer holds up to heavy use, making it a reliable piece for any adventure."From high-alpine ascents to chilly morning hikes, the Aconcagua ML Jacket is built to keep us warm without restricting movement. Designed with Polartec(R) Power Stretch(R) Pro, this fleece provides a perfect balance of breathability, insulation, and flexibility, allowing us to move freely while staying comfortable. Its slim, athletic fit makes it an ideal mid-layer under a shell when tackling tough conditions, while its rugged, abrasion-resistant exterior ensures long-term durability. Whether climbing, skiing, or trekking into the backcountry, the Aconcagua ML Jacket offers reliable warmth and performance, season after season.