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WarmCube Active Alt HB Jacket - Women's

4.375 out of 5 stars
8 Reviews
Current price: $157.48 - $174.98 Original price: $349.95
Up to 55% off
Color:Purple Fig


Size Chart


Why We Like The Marmot WarmCube Active Alt HB Jacket

The WarmCube Active Alt HB Jacket isn't your average puffy, which is why it's our first choice for outdoor pursuits. The packable down insulation is treated with Down Defender to maintain its performance even when damp, while the WarmCube 3D baffle design prevents insulation from shifting even during high-output activities.


  • Down jacket designed for active days outdoors
  • Nylon ripstop fabric withstands wear and tear
  • Down insulation for soft, lightweight warmth
  • Zippered pockets keep small essentials secure
  • Highly compressible design for easy packing
  • Item #MARZ9RN
Responsible Collection
100% recycled nylon ripstop
700-fill down, Down Defender
Fill Weight
Baffle Construction
3D WarmCube
Center Back Length
2 zippered hand, 2 zippered chest
Claimed Weight
casual, hiking, backpacking, climbing
Manufacturer Warranty

Overall Rating

4.5 based on 8 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 2 reviews
4 Stars - 1 reviews
5 Stars - 5 reviews

What do you think about this product?


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3 out of 5 stars

February 2, 2024

This is a very lightweigh piece; Not a winter coat

I ordered this looking for a lightweight, packable winter jacket. Was excited to try it and SO looking forward to receiving it. I am writing this review for two reasons: 1) Set Expectations 2) Sizing The sleeves are not insulated. So this is something you may take out for a run, but you would not wear to walk around NYC. It is more like a down vest with a sleeve for wind and rain. The hood is not insulated either, though this matters less. As for sizing: I am 5'8" and 145 lbs. D cup. So based upon the size charts and models, I purchased a medium. While this was stretchy enough to zip, it wasn't sitting in the correct position. The waist line / back curvature was inching up too high. When I let it hit naturally and unzipped, there was about a 1" gap, so clearly I would have needed to size up to a L (Large) if I were to have kept the jacket.


Originally reviewed on

5 out of 5 stars

January 30, 2024

Versatile Jacket

[This review was collected as part of a promotion.] I like the warmth, yet when you go inside you don't overheat. My picture shows where the lining is not down, rather a 'rubbery' mesh (not slick) and I read that's good for climate control next to your body. I had first ordered the Warm Cube Active Novus, synthetic lining everywhere except the hood--but the upper chest was a tight and squished the cubes. The down version with two chest pockets looked fine. No big athletic endeavors these days for me, but this has been a great jacket for snowshoeing, walks and errands. With fleece under it's been comfortable in the 20-30's if winds are below 20 mph, otherwise the arms get chilly. It sheds light rain.

user image
cold wind

Originally reviewed on

3 out of 5 stars

October 31, 2023

Prefer the synthetic lining

[This review was collected as part of a promotion.] I returned this, as it did not seem as warm as the synthetic lining version, which I had before, and it also seemed a bit smaller. The lining on the arms seemed almost non-existent.

Originally reviewed on

5 out of 5 stars

January 3, 2023

Excellent Everyday Performance Piece

I love this jacket for anything active! It seriously keeps the insulation warm when you need it at rest. In addition, it circulates a bit of air when you need it most during activities. It's great for anything you like to do in the outdoors! I should also say, it's my go-to for school drop off as well :)

Heather F

Originally reviewed on

4 out of 5 stars

November 28, 2022

Runs large?

[This review was collected as part of a promotion.] Had to return this size xs jacket because it was too big for me (4'11", 100lbs), so I can't speak to the warmth. Seems like it would have packed down easily, and I loved the orange color.

Originally reviewed on

5 out of 5 stars

November 7, 2022

love this jacket

Warmer than you would think for how lightweight it is. My new go-to jacket for winter in California!


Originally reviewed on

5 out of 5 stars

August 16, 2022


This is a great jacket, versatile, lightweight, and warm. It is the perfect item to grab when out on a hike, or when running to the market, or really for any use. I have received so many compliments on it, and I am always so excited to share the many features it has and just how awesome it is!


Originally reviewed on

5 out of 5 stars

August 16, 2022

Great Layer For Touring

[This review was collected as part of a promotion.] This has become my favorite insulation piece to wear backcountry skiing. On clear days I use it as an outer layer for the climb and layer a shell over it on the ski down. I'm really impressed that I don't over heat while climbing and it saves me from the "be bold start cold" experience.


Originally reviewed on