Mammut Aconcagua ML Jacket Women's Fleece - Red/Dark Red, XS

On a crisp alpine morning, a mountaineer pulls on the Aconcagua ML Jacket before setting off up the ridge. The Polartec Power Grid fabric traps warmth while releasing excess heat, keeping her comfortable as the climb intensifies. This women's midlayer fleece is built for high-output mountain activities.

Key specifications

• Material: Polartec Power Grid (89% polyester, 11% spandex)
• Fit: Athletic fit with 4-way stretch for unrestricted movement
• Closure: Full-length YKK Vislon front zipper
• Pockets: Two zippered side pockets, harness-compatible
• Sleeves: Thumb loops keep sleeves in place
• Collar: High collar for added neck protection
• UV Protection: UPF 50+
• Sustainability: bluesign® PRODUCT

Why choose it

The Aconcagua ML Jacket excels in breathability and moisture management, drying quickly during stop-and-go activities. Its stretch fabric moves with you on technical terrain, while the athletic cut layers smoothly under a shell. The zippered pockets sit above a harness, so essentials stay accessible.

Ideal use cases

• Mountaineering and alpine climbing
• Ski touring and backcountry skiing
• Hiking and trekking in cool conditions
• Everyday outdoor wear in transitional seasons

Good to know

Polartec Power Grid uses a grid pattern that reduces fabric weight while increasing warmth and breathability. The jacket is bluesign® certified, ensuring responsible production. Machine washable and quick drying for easy care on multi-day trips.