Basement - Marmot Featherless Insulated Jacket - Past Season

3M Thinsulate Featherless Insulation 140g/sqm
Weighs 462g (Medium size)
Code: AW17349
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Marmot's Featherless Jacket is constructed using 3M Thinsulate insulation - an innovative down alternative. It looks, acts and feels like down, even working when wet. 

Marmot says:

Pure joy: In the Marmot Featherless Jacket, there are no feathers to ruffle. We designed this layerable jacket — ideal for a variety of cold-weather activities when constant warmth is a must — with the revolutionary new 3M™ Thinsulate™ Featherless , a water-resistant, loose-fill synthetic insulation that matches the warmth and pillowy feel of 700-power-fill down, yet maintain warmth when wet better than down. The state-of-the-art materials and functional design make this jacket a jet setter in thermal technology's upward flight.


Featherless - Featherless is a synthetic insulation that provides the warmth of 700 Fill Power Down while having all the benefits of synthetic material. Click the Logo to read more...

The big news here is the insulation. After 2 years of development, Marmot have created the next generation of synthetic insulation. The Featherless Jacket is scientifically engineered with 3M Thinsulate to replace natural down. It looks like down and acts like down but while traditional down loses warmth when wet, the Featherless keeps on performing.

The Featherless Jacket packs tight and travels light. Plus, its sustainably-produced materials are bluesign approved. There's a pull drawcord on the hem and both the cuffs and hem have an elasticated binding. The jacket has 3 pockets in total - two hand warmer pockets and 1 internal storage pocket.

Overall a great looking jacket that will keep you warm even when wet.

- Reviewed by Ultralight Outdoor Gear

Read reviews here:


Help and advice: Synthetic Insulation explained at Ultralight Outdoor Gear
  • 3M™ Thinsulate™ Eco Featherless Insulation
  • Zippered Hand Pockets
  • Elastic Bound Cuffs
  • Inside Zip Stuff Sack Pocket
  • Elastic Drawcord Hem
  • Angel-Wing Movement™
  • Zippin™ Compatible
  • Small weighs: 426g
  • Medium weighs: 462g
  • Large weighs: 484g
  • XLarge weighs: 520g
  • XXLarge weighs: 548g
  • Fit: Regular
  • Center back length: 68.6cm


  • 100% Nylon Double Mini Rip 1.0 oz/ yd
  • 3M™ Thinsulate™ Eco Featherless Insulation 140g/sqm
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