Details & care
A lightweight, insulated jacket is cut from four-way stretch Fortius 2.0™ fabric for enhanced breathability and mobility, while a low-profile StormHood™ completes the action-ready design.
- Front zip closure
- Stand collar; helmet-compatible hood
- Elastic cuffs
- Chest zip pockets; vertical side-zip pockets
- Drawcord-toggle hem
- Durable water-repellent (DWR) finish
- 60-denier stretch soft shell nylon plain weave face with 233 g/m² polyester fleece backing
- 84% nylon, 16% elastane
- Machine wash, tumble dry
- Imported
- Item #10999227
Size info
- The brand says this runs true to size.
- Get the fit you want. Book an appointment with our onsite experts or stop by your nearest store.
Shipping & returns
Free shipping. Free returns. All the time. Purchases made online can also be returned or exchanged at any Nordstrom store, free of charge. Read more about our shipping & returns policies.
Gift options
Choose your gift options at checkout. Some items may not be eligible for all gift options.
Delivery
- Email gift message (free)
- Printed gift message (free)
- Fabric gift bag ($5)
Need help finding the perfect gift? We've got you covered.
Arc'teryx
With a name inspired by the first reptile to sprout feathers for flight, it's no surprise Arc'teryx is all about creating outdoor clothing and gear that allow users to perform at the point of extreme need. Its innovative, highly technical outerwear protects against the elements while ensuring ease of motion for an optimal outdoor experience.
Most helpful positive review
Feb 21, 2026
Good fit for athletic build
I am 6’3” with 44” chest and 34” waist. More athletic build and broader shoulders.
Size XL is a perfect fit for me with perfect sleeve length. I have enough room for layering but the jacket is not too baggy. Cerium in L was too tight for me on the shoulders and XL was too baggy in the waist. Not a problem with this jacket.
Very happy and great daily jacket for fall/spring. I do wish the logo had the arcteryx lettering but just my personal preference.
Patrick
Reposted from arcteryx.com
Most helpful critical review
Feb 22, 2026
Why did you ruin a perfect color with those pocket
I’ve been waiting for a decent blue-grey Gamma MX for seasons. Finally, the "Dk Stratus" color looks amazing on the Jacket version. But why, for the love of design, did you add those bright blue contrast pockets to the Hoody?
The Jacket is sleek and monochromatic, while the Hoody looks like a DIY patchwork project. The contrast is jarring and cheapens the aesthetic of an otherwise high-end piece. We buy Arc'teryx for the minimalism and technical look, not for random pops of color that don't match. Please, give us a monochromatic Hoody option. This was a massive swing and a miss.
YanZ
Reposted from arcteryx.com
arcteryx.com response
Hello YanZ, thank you for taking the time to share this with us. Your feedback on the Dk Stratus Gamma MX Hoody is genuinely appreciated. We’re glad the Jacket version hit the mark for you, and we understand how the contrast pocketing on the Hoody can feel out of step with the clean, monochromatic aesthetic many of our guests look for. The design team explored a more expressive color-blocked approach this season, but we can see that this direction didn’t resonate with everyone. Input like yours is incredibly valuable as we plan future colorways, and we’ll be sure to pass this along so the desire for a fully tonal option is heard.
5 stars
53%
4 stars
17%
3 stars
12%
2 stars
14%
1 star
5%
Pros:
Cons:
Current reviews don’t mention any.Sort by Most Helpful
Size
Color
Kangster
Reposted from arcteryx.com
Mar 2, 2026
A let down for the features as advertised.
Not reliable as a layer for warmth. I purchased this thinking it would be a better jacket than a Atom but soon found out that the shell is extremely thin and did not offer any more warmth than a shell with out any fleece. I found that the DWR was not useful in situations where there is more than a bit of drizzle. If you plan on wearing this product be sure to have an actual Gore-Tex shell with you on top.
arcteryx.com response
Hello there, thank you for sharing your experience with the Gamma MX Hoody. We’re sorry to hear it didn’t provide the warmth or weather protection you were expecting, especially if you were hoping it would serve as a warmer alternative to the Atom. The Gamma MX is built as a softshell focused on breathability, mobility, and wind resistance, with a light insulating backer, but it won’t trap heat the same way a synthetic‑insulated piece does. Its DWR finish is designed to shed light moisture, but it isn’t intended to replace a waterproof GORE-TEX shell in sustained rain or heavier precipitation. Your feedback is important, and we appreciate you highlighting where the performance didn’t align with your needs. It helps our team continue refining how we communicate the intended use of each layer so guests can choose the right system for their conditions.
YanZ
Reposted from arcteryx.com
Feb 22, 2026
Why did you ruin a perfect color with those pocket
I’ve been waiting for a decent blue-grey Gamma MX for seasons. Finally, the "Dk Stratus" color looks amazing on the Jacket version. But why, for the love of design, did you add those bright blue contrast pockets to the Hoody?
The Jacket is sleek and monochromatic, while the Hoody looks like a DIY patchwork project. The contrast is jarring and cheapens the aesthetic of an otherwise high-end piece. We buy Arc'teryx for the minimalism and technical look, not for random pops of color that don't match. Please, give us a monochromatic Hoody option. This was a massive swing and a miss.
arcteryx.com response
Hello YanZ, thank you for taking the time to share this with us. Your feedback on the Dk Stratus Gamma MX Hoody is genuinely appreciated. We’re glad the Jacket version hit the mark for you, and we understand how the contrast pocketing on the Hoody can feel out of step with the clean, monochromatic aesthetic many of our guests look for. The design team explored a more expressive color-blocked approach this season, but we can see that this direction didn’t resonate with everyone. Input like yours is incredibly valuable as we plan future colorways, and we’ll be sure to pass this along so the desire for a fully tonal option is heard.
Patrick
Reposted from arcteryx.com
Feb 21, 2026
Good fit for athletic build
I am 6’3” with 44” chest and 34” waist. More athletic build and broader shoulders.
Size XL is a perfect fit for me with perfect sleeve length. I have enough room for layering but the jacket is not too baggy. Cerium in L was too tight for me on the shoulders and XL was too baggy in the waist. Not a problem with this jacket.
Very happy and great daily jacket for fall/spring. I do wish the logo had the arcteryx lettering but just my personal preference.
bob28
Reposted from arcteryx.com
Feb 19, 2026
Poor fit
Fit is terrible, has the sleeves of a size small and the body of a large (size large purchased), the hood is tiny. Can't comment on the performance as it is getting returned whenever Arcteryx can fix their computer system.
arcteryx.com response
Hello there, thank you for taking the time to share your feedback on the Gamma MX Hoody. We’re sorry to hear the fit didn’t meet your expectations, particularly with the sleeve length, body proportions, and hood size feeling inconsistent for the size you selected. We understand how important a reliable and balanced fit is, and we appreciate you letting us know this piece didn’t align with what you were hoping for. Your comments are valuable to us as we continue refining our designs and ensuring a more consistent experience across our sizing.
FRED
Reposted from arcteryx.com
Feb 15, 2026
很棒的衣服。
我很喜欢这件衣服，我有好几件Gamma MX 连帽衫。同时，我也买了好几件送给我朋友。这件衣服非常适合通勤/上下班的时候穿着，他们相比于功能型的衣服，更加柔软，同时，简易的防水性能，适合小雨或者短时中雨的防护。
Roscoe
Reposted from arcteryx.com
Feb 9, 2026
Great Hoody
Phenomenal hoody! It’s very well built and fits very well. I live in northern Ontario and with the recent dip into the minus 30s Celsius this hoody paired with my Macai have kept me warm. Only complain I have is the end knobs of the hood draw string rub on my collar bone occasionally. Not a big deal for me but it is noticeable a
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