Mammut Aconcagua ML Midlayer Jacket Men's Black XL

The Mammut Aconcagua ML Midlayer Jacket redefines alpine layering by combining the warmth of a fleece with the breathability and stretch of a technical midlayer. Built around Polartec Power Grid fabric, it manages body heat efficiently during high-output activities, making it a reliable choice for mountaineering, climbing, hiking, and ski touring. Unlike conventional fleeces, its grid construction traps warm air while allowing excess heat to escape, keeping you comfortable across a wide range of temperatures.

Highlights

• Polartec Power Grid material for optimal warmth-to-weight ratio
• Athletic fit offers a close-to-body silhouette without restricting movement
• 4-way stretch fabric ensures maximum mobility during dynamic climbs
• Two zippered hand pockets keep essentials secure and accessible
• Thumb loops prevent sleeve ride-up and add extra hand coverage
• Bluesign® accredited product — produced with sustainable practices

In daily use

On cold-weather routes or ski tours, the Aconcagua ML adapts to your motion. Flatlock seams reduce chafing, while the quick-drying, moisture-wicking knit keeps you dry during intense effort. The full-zip front lets you vent heat quickly on the move, and zippered pockets provide safe storage for small items. The athletic fit layers easily under a shell without bulk, and the thumb loops keep sleeves in place when reaching for holds.

Full specifications

• Product Type: Midlayer Jacket
• Gender: Men's
• Size: XL (Extra Large)
• Color: Black
• Material Technology: Polartec Power Grid
• Main Material Composition: 89% Polyester, 11% Elastane
• Fit: Athletic Fit
• Closure Type: Full-zip
• Pockets: 2 zippered hand pockets
• Sleeve Features: Thumb loops
• Seam Construction: Flatlock seams
• Breathability: High
• Moisture Wicking: Yes
• Quick Drying: Yes
• Stretch Fabric: 4-way stretch
• Sustainability: Bluesign® Product
• Intended Use: Mountaineering, Climbing, Hiking, Ski Touring
• Season: All-season
• Care Instructions: Machine wash cold, do not bleach, tumble dry low, do not iron, do not dry clean

Final note

Engineered for those who demand performance without compromise, the Aconcagua ML Midlayer Jacket is a versatile companion for any alpine adventure.