Coefficient 1/4-Zip Fleece Jacket - Men's
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Why We Like The Black Diamond Coefficient 1/4-Zip Fleece Jacket
Skintrack, ice wall, alpine crack system, or a mixture of it all, the Black Diamond Coefficient 1/4-Zip Fleece Jacket gives our core the breathable warmth it needs to keep us moving. The grid-fleece construction holds in warm air while boosting breathability and moisture management to ensure we feel just right during the climb, the view soak, and the descent.
Details
- Lightweight midlayer for high-output wintertime pursuits
- Breathable fleece material to help regulate your temp
- Gridded fleece interior enhances moisture management
- 1/4-zip front allows an easy on-off and venting
- Low-profile hood fits comfortably under your helmet
- Thumbholes help keep your sleeves in place
- Zippered chest pocket stashes your phone
- Item #BLDZ9JE
- Responsible Collection
- [face fabric] bluesign® APPROVED
- Material
- [face fabric] Polartec Power Dry Fleece (51% polyester, 36% nylon, 13% elastane)
- Fleece Weight
- lightweight
- Fit
- slim
- Length
- hip
- Hood
- fixed, under-the-helmet
- Pockets
- 1 zippered chest
- Thumbholes
- yes
- Activity
- skiing, snowboarding, climbing, mountaineering
- Manufacturer Warranty
- limited lifetime
Reviews
Q&A
What do you think about this product?
Overall Rating
5 based on 18 ratings
Review Summary
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Selecting an option will reload the available reviews on the pageJuly 5, 2025
Coefficient
A very nice, well made mid layer. Of corse the Polertec material is the best material cand combined with BD's quality, this layer is becomming my every day, go to. I wish the zipper came up a little higher is all.
Originally reviewed on blackdiamondequipment.com
June 28, 2025
Quality when it matters
Like all Black Diamond clothing this Coefficient quarter zip is a solid quality garment. I bought this use as a mid layer for my Black Diamond jacket shell and it’s perfect. It’s always nice to know you can count on Black Diamond when quality and performance matter. I’m glad Backcountry carry’s this brand.
June 10, 2025
Love the Coefficient Quarter zip!
I’ve had multiple coefficients over the years. They are my go to for resort and backcountry skiing. This is my first one with a hood and I wish it was available without one. I’ve always enjoyed the Polartec fleece because it is so warm and it breathes well. You just can’t go wrong with the Coefficient!!
Originally reviewed on blackdiamondequipment.com
February 20, 2025
Great
Perfect design. Black diamond hits another home run!
Originally reviewed on blackdiamondequipment.com
January 26, 2025
Streamlined!
A nice slim fitting fleece that isn’t bulky under a shell. It has great stretch and love the thumb holes!
Originally reviewed on blackdiamondequipment.com
January 17, 2025
Really great layer
I needed the right layer for splitboarding becuase I get really hot quickly. This has been a really nice addition. I'm 5'11" and 185lbs and the large is form fitting. I'll wear a smartwool t-shirt underneath and that is it. It kept me warm when I needed it but when I zipped it all the way down I was perfectly cool.
Originally reviewed on blackdiamondequipment.com
January 12, 2025
Great fit and warm
I normally wear a size small but ordered this in a medium and it fit perfect. Not like some of their other product in terms of fit. The material is relatively thick so it works well for medium pace running with a t-shirt underneath in 35 degree light wind sunny conditions. Also a tread mid layer if using a windproof insulated shell in higher alpine cool weather with wind and low intensity activity.
Originally reviewed on blackdiamondequipment.com
September 14, 2024
Awesome
I love the Coefficient Quarter Zip. Great for cool weather with a t-shirt, and also as a layer.
Originally reviewed on blackdiamondequipment.com
June 11, 2024
Buy before their sold out!
A must have sweater! For run, for trad and ice climbing. Best all around sweater in years. I fit better in the xs man ( I’m a lady wearing XS women. ) Shoulders a bot larger and it stays fit at the bottom.
Originally reviewed on blackdiamondequipment.com
February 7, 2024
Awesome hoody!
Breathable, stretchable, and warm... this hoodie is perfect for hiking during the shoulder seasons in Virginia. Fit: The medium size has no extra room and I am 5'8" and 143 lbs.
Originally reviewed on blackdiamondequipment.com
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May 30, 2025