The Mammut Aconcagua Power Stretch® Jacket is a technical, light and insulating fleece jacket made of elastic Power Stretch® material. It's stretchy fabric provides the ultimate in comfort and warmth, moving with you as you climb, walk, bike or rest.

A superb mid layer for UK winters, or as a heavy weight base layer for Polar Expeditions.

You'll come to love the comfort of this jacket.

Cut: Regular Fit
UV protection (UPF)UPF 50
Very robust and abrasion-proof Polartec® Power Stretch® Pro™ with nylon face
Robust, quick-drying outside - pleasantly soft and warm inside
2 backpack and climbing-harness-compatible zipper pockets
High-quality, durable thumb loop

Weight 415g
Main material
57% Polyester | 33% Polyamide | 10% Spandex