Isotherm Jacket

$225.00 - $550.00 
#71780 | NEW | 

Whether backcountry skiing or ice climbing, the Isotherm Jacket is built for the active purists. The lightweight 20-denier Pertex® Quantum® down-proof fabric is filled with Polartec® Alpha® insulation for warmth when you’re on the move; breathable Polartec® Power Stretch® panels allow uninhibited movement. Layer this incredibly lightweight puffy over a midlayer for warmth when you’re on the move.

Sizing & Fit Guide

Color:

  • Cobalt Blue
  • Black
  • Slate Grey
  • Cinder
  • Team Red

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Whether backcountry skiing or ice climbing, the Isotherm Jacket is built for the active purists. The lightweight 20-denier Pertex® Quantum® down-proof fabric is filled with Polartec® Alpha® insulation for warmth when you’re on the move; breathable Polartec® Power Stretch® panels allow uninhibited movement. Layer this incredibly lightweight puffy over a midlayer for warmth when you’re on the move.

Features

Feature List
  • 20 Denier Pertex Quantum® Fabric
  • Polartec® Alpha® Insulation
  • Polartec® Power Stretch® Panels
  • Zip Hand Pockets
  • Zip Chest Pocket
  • AirExchange Lining
  • Interior Mesh Pocket
  • Elastic Bound Cuffs
  • Elastic Drawcord Hem
  • Angel-Wing Movement™
Main Materials
Pertex Quantum® 100% Nylon Mini Shadow Ripstop 1.0 oz/yd, Polartec® Power Stretch® Pro 37% Nylon, 42% Polyester, 16% Elastane 6.1 oz/yd
Insulation Material
Polartec® Alpha®
Center Back Length (Base of neck to bottom of hem)
27in
Fit
Regular Fit
Weight
1lbs 0.3oz (462.1g)

Technology

Polartec® Alpha®

Polartec® Alpha® is a new state-of-the-art synthetic insulation that banishes the need for impervious down-proof fabrics by offering a rare combination of lightweight warmth and true breathability in a "puffy" style garment.

What is it?

Polartec® Alpha® is a new concept in synthetic insulation focused on unsurpassed thermo-regulation. Unlike conventional synthetic insulations Polartec® Alpha® is a knit material that offers excellent stability and superior durability without the need for scrims or tightly woven fiber proof lining fabrics.

How does it work?

Its unique knit structure allows for the use of highly breathable lining fabrics which permit body heat and moisture vapor to move through the insulation. This air permeability allows for warm air to move from areas of high concentration to areas of low concentration creating a more even distribution of warmth with-in the garment.

What are the benefits of this technology?

  • High breathability allows unrestricted movement of moisture vapor
  • Dries 20% faster than conventional synthetic insulations
  • Extremely versatile much more comfortable in a much wider range of activities than conventional synthetic insulated garments.
  • Highly durable knit structure allows the use of highly breathable lining fabric for maximum air permeability.

Pertex Quantum®

Pertex Quantum® is the lightest down-proof by construction fabric available. It is a true featherweight at around 30g/m2 and uses the finest yarns available with the maximum thread count.

Wash & Care

Why do we encourage proper care of our clothing and gear?

Because you have invested in (or are thinking about investing in) one of the most technically advanced pieces of apparel or equipment you'll ever own and we want to make sure you have the information you need to protect and care for your purchase. Proper care assures you will optimize the performance of your Marmot product and maximize its service-life.

Clothing Care

  • Machine Wash Cold
  • Gentle Cycle
  • Powdered Detergent
  • Wash Separately
  • No Fabric Softeners
  • Do Not Iron
  • Do Not Bleach
  • Do Not Dry Clean
  • Tumble Dry Low
  • Close All Fasteners

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