Mammut 2021 Aconcagua Light ML Jacket

This updated version of the popular Aconcagua sees a change of fabrics resulting in a lower weight without a lose of quality or performance. It is still a comfortable and technical mid layer you'll be happy to wear all day on and off a mountain.

Mammut says:

The Aconcagua Light can be worn as a mid-layer for mountaineering, climbing, ski touring or hiking. The high-quality material is lightweight, stretchable and pleasant to wear. The design of the pockets is tailored to the needs of mountain sports enthusiasts: allowing easy access at all times, even when wearing a backpack or climbing harness. A versatile and comfortable mid-layer jacket.

Mammut's 2021 Aconcagua Light ML Jacket is a streamlined mid layer designed to keep you comfortable when on the move. The jacket is quite a slim fit but stretchy and very soft on the skin. This jacket is light on features to keep the weight down. There is a single small chest pocket. There is no adjustment on the cuffs or waist. This stripped back design is ideal for layering and keeping the weight and packsize to a minimum.

The most recent update has seen a switch to a new fabric and with a ribbed design to allow more effective temperature regulation when hot or cold. It is comfortable, looks great and actively wicks moisture away when you start to heat up. This is a Bluesign certified product meaning it has been manufactured in a sustainable way limiting the impact on the environment where possible.

- Reviewed by Ultralight Outdoor Gear

Help and advice:

• Lightweight, comfortable, stretchable material
• Robust fabric thanks to polyamide content
• Active moisture-wicking
• Flat seam design to avoid rubbing
• Chest pocket made from contrasting fabric with zipper
• Bonded pocket bags for low friction and clean look
• Functional thumb loop closes neatly at the opening
• Very good warmth-to-weight ratio

• Small weighs: 292g
• Medium weighs: 306g
• Large weighs: 320g
• Fit: Athletic

Material

• Main Fabric 2 (B2B): Polyamide-Elastane Woven with miDori® 
• Main Fabric 2 - Face Material (B2B): 85% Polyamide, 15% Elasthan 
• Main Fabric 1 (B2B): Polyester knit
• Main Fabric 1 - Face Material (B2B): 55% Polyamide, 30% Polyester, 15% Elasthan
• Bluesign certified