Mammut Aconcagua ML Men's Mid-Layer Jacket - Black

The Aconcagua ML stands apart from ordinary fleece jackets through its Pontetorto® Tecnostretch fabric, which delivers an exceptional warmth-to-weight ratio and unrestricted mobility for demanding alpine pursuits. This mid-layer is engineered for mountaineering, ski touring, climbing, and hiking, where every gram counts and freedom of movement is non-negotiable. The athletic fit and high-stretch material work together to keep the jacket close to the body without restricting reach, while the flat seam construction prevents chafing during long approaches or multi-pitch routes.

Highlights

• Pontetorto® Tecnostretch fabric: 89% polyester, 11% spandex for high elasticity and quick drying
• Full-length YKK Vislon front zipper for smooth operation and durability
• Two zippered hand pockets positioned to be compatible with backpacks and climbing harnesses
• Elastic cuffs with integrated thumb loops to seal out drafts and keep sleeves in place
• bluesign® PRODUCT certification ensures sustainable and responsible manufacturing

In daily use

On cold mornings at the crag or during a brisk ski tour, the Aconcagua ML functions as an ideal thermal layer. The high collar adds extra protection against wind, while the breathable fabric manages moisture effectively during high-output activities. The zippered pockets keep essentials secure even when wearing a harness, and the thumb loops provide additional coverage for your hands without needing separate gloves. The jacket's lightweight design (365 g in size M) makes it easy to pack and carry, ensuring you stay warm without being weighed down.

Full specifications

• Product Type: Mid-Layer Jacket
• Gender: Men's
• Color: Black
• Main Material: Pontetorto® Tecnostretch
• Material Composition: 89% Polyester, 11% Spandex
• Fit: Athletic Fit
• Pockets: 2 zippered hand pockets (backpack and climbing-harness compatible)
• Cuffs: Elastic cuffs with integrated thumb loops
• Zipper Type: Full-length YKK Vislon front zipper
• Collar Type: High collar
• Stretch: Highly elastic for optimal freedom of movement
• Thermal Properties: Excellent warmth-to-weight ratio, good insulation
• Breathability: High
• Moisture Wicking: Yes, quick-drying
• Seams: Flat seam design to avoid chafing
• Sustainability: bluesign® PRODUCT
• Intended Use: Mountaineering, Ski Touring, Climbing, Hiking
• Weight (Size M): 365 g

Final note

From alpine ascents to everyday adventures, the Aconcagua ML delivers performance without compromise.