Mammut Mammut Treeline 3-In-1 Hs Hooded Jacket - Women's
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Mammut Treeline 3-In-1 Hs Hooded Jacket - Women's

Mammut

$579.00

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Product Insights & Style Tips

Mammut Treeline 3-In-1 HS Hooded Jacket for women is built for days when the forecast keeps you guessing. The outer shell uses 2-layer GORE-TEX with a PFC-free ePE membrane for waterproof, windproof protection, while the lightweight inner puffy adds warmth with recycled down. Zip them together for full-on winter, or wear each layer independently as temps swing from bluebird to blustery. Bluesign Approved shell material with a 75D x 75D polyester face and a PFC-free DWR finish sheds drizzle without fuss.

Wearability is all about flexible layering. Pit zips vent heat on uphill moves, a single-pull hood seals out spindrift, and the water-repellent front zip plus hem adjusters fine-tune coverage. Harness-friendly hand pockets sit on the outer shell, while two zip pockets on the inner keep smaller essentials close without bulk. When the weather warms, you can wear just the outer shell or the liner solo, letting your layering evolve with the day.

From Mammut's Responsible Collection, this system leans into recycled materials and practical outdoor heritage. It speaks to the current craving for modular outerwear that moves from trailhead to town, balancing rugged performance with city polish.

Materials / Fabrication

  • Outer shell uses 2-layer GORE-TEX with an ePE membrane for waterproof, windproof protection
  • Face fabric: 75D x 75D 100% polyester
  • PFC-free DWR finish
  • Responsible Collection: Bluesign Approved
  • Shell material and construction designed to be modular for 3-in-1 wear with a removable liner
  • Inner liner: 100% recycled polyester
  • Removable liner: face fabric 100% recycled nylon; lining 100% recycled polyester; insulation is recycled down
  • Insulation: recycled down in the inner puffy for warmth
  • Ventilation: pit zips for adjustable airflow
  • Hood: single-pull adjustable hood
  • Front zip: water-repellent zipper
  • Hem adjusters for coverage control
  • Pockets: harness-friendly hand pockets on the shell and two zip pockets on the inner
  • Warranty and performance notes include waterproof rating of 28,000 mm and breathability of 20,000 g/m2

Recommended Care

  • For outer shell care, machine wash cold on gentle cycle with a mild detergent; close zippers and fasteners before washing
  • Avoid fabric softeners and bleach; these can degrade waterproofing and fabric performance
  • Reproof with a suitable DWR treatment after washing to restore water repellency
  • Dry outer shell thoroughly; tumble dry on low heat or air dry to reactivate waterproofing
  • For the removable liner and insulation, wash separately on gentle cycle with cold water and a down or recycled-down detergent; air dry or low heat until completely dry to prevent clumping
  • Avoid high heat and direct sunlight when storing; store in a cool, dry place

Fit Notes

  • The outer shell uses a two-layer GORE-TEX with a PFC-free ePE membrane for waterproof and windproof protection during movement.
  • A lightweight inner liner with recycled down provides warmth, and the two layers can be zipped together for full winter coverage or worn separately for lighter layering.
  • Ventilation from pit zips, a single-pull hood to seal out wind, a water-repellent front zip, and an adjustable hem for customizable coverage.
Mammut Mammut Treeline 3-In-1 Hs Hooded Jacket - Women's

Styling Tips

  • Layer it with knitwear to adapt as temperatures change, since the shell and removable liner can be worn separately or zipped together.
  • Pair it with denim to balance the technical shell, and use harness-friendly hand pockets on the shell and two zip pockets on the inner for essentials.
  • Carry it with a nylon designer bag to keep essentials close and maintain a streamlined silhouette.

About Mammut

Since 1862, Mammut has evolved from a Swiss rope maker into a leading global outdoor brand. Today, Mammut specializes in high-performance outdoor gear across clothing, footwear, and equipment for climbing, mountaineering, hiking, and snow sports. The line includes technical jackets, shells, insulated layers, backpacks, sleeping bags, avalanche gear, climbing ropes, harnesses, and protective footwear, all engineered for extreme conditions and everyday adventures alike. Born in Dintikon, Switzerland, the company started with rope production and later expanded to apparel and hard goods, including the iconic Eiger Extreme line. For shoppers seeking durable, technically capable pieces with alpine heritage, Mammut delivers reliability, innovation, and a long-standing mountain-first ethos.