Mammut Aconcagua Light ML Men's Fleece Jacket Black Size L

When you're pushing hard on a chilly alpine ridge, the Mammut Aconcagua Light ML Men's Fleece Jacket keeps you moving without overheating. This black mid-layer is built for high-output activities in rugged terrain, from ski touring to mountaineering. Its stretchy Pontetorto® Tecnostretch fabric and athletic fit make it an ideal companion under a shell or on its own during demanding climbs.

Key specifications

• Material: Pontetorto® Tecnostretch (89% polyester, 11% spandex)
• Fit: Athletic
• Front zipper: YKK Vislon®
• Pockets: 2 zippered side pockets
• Collar: High collar
• Sleeve features: Thumb loops
• Seam construction: Flat seams
• Breathability: High
• Moisture wicking: Yes
• Stretch: 4-way stretch
• Sustainability: bluesign® PRODUCT, Fair Wear

Why choose it

The Aconcagua Light ML is crafted with Pontetorto Tecnostretch, a blend that offers excellent four-way stretch while maintaining a soft, comfortable feel against the skin. The athletic cut eliminates excess fabric, allowing it to layer effortlessly under a weatherproof shell. A high collar and integrated thumb loops provide extra coverage against cold drafts, while flat seams reduce friction and chafing even when you're wearing a pack. The YKK Vislon front zipper is durable and glides smoothly, and two zippered side pockets keep essentials secure during movement.

Ideal use cases

• Mountaineering
• Hiking
• Climbing
• Ski touring
• Everyday wear as a comfortable, breathable layer

Good to know

This fleece is designed as a mid-layer for dynamic outdoor activities. It wicks moisture efficiently to keep you dry, and its bluesign® and Fair Wear certifications ensure responsible manufacturing. Machine wash cold, do not bleach, tumble dry low, do not iron, do not dry clean.