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 13 ratings
Review Summary
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Selecting an option will reload the available reviews on the pageJanuary 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
January 14, 2024
Amazing fit
I have a lean muscular build and am 6'1" 160 lbs. This fits me perfectly and is very cozy/warm while still being breathable and light.
Originally reviewed on blackdiamondequipment.com
December 20, 2023
Coefficient 1/4 Zip
I own several mid layers of this realm from many diff companies. The Coefficient ranks up there with the best in looks and function. The Co was my first Black Diamond purchase. I'll be sure to buy more gear
Originally reviewed on blackdiamondequipment.com
November 17, 2023
Love the fit
I have a full zip version of the same item and it is my go to for backpacking and skiing. The hood is great under a ski helmet. This one will be used for running too. My favorite Black Diamond product.
Originally reviewed on blackdiamondequipment.com
November 10, 2023
Great fleece for climbing
The old standard here was called the R1, from another brand. I've been looking at all the fleeces lately since I'm at the stage where I've trashed a lot of my gear and starting to replace it. The BD coefficient has what others done, great fit, good hood, an actual zipper guard (unlike the r1). It's fantastic. 2 gripes: if my zipper goes down all the way it sticks, I'll probably contact warranty since it has done this since I got it new, and I think the material could be thicker given the price. Overall, there's nothing better that I tried...and I tried a lot of them. Enjoy! 6ft2in, 205lb broad shoulders, xl is perfect.
Originally reviewed on blackdiamondequipment.com
September 30, 2023
Great Fit!
I bought this as a mid layer. It fits great and snug, not too snug over my first layer. Lots of stretch and the hood fits great under a helmet. Also like how it zips up high and creates a mini face shield. For reference I'm 6' and 150 lbs, I bought the medium. Much recommended!
Originally reviewed on blackdiamondequipment.com
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