Lightweight InsulationLightweight Insulation


Cool climbing days, sunny ski days, and everything in between.

A hooded version of the award-winning Gamma MX Jacket, the Arc'teryx Women's Gamma MX Hoody Jacket offers mountain-lovin’ ladies sleek, trim performance. Arc'teryx’s gusseted underarms provide unparalleled freedom of movement when you're climbing or skiing. Soft fleecy Polartec Power Shield fabric inside the jacket warms you and wicks moisture away from your body, while the long torso length keeps you covered when you lean for your next hold or pole plant. This fabric breathes like a champ and blocks out the wind, giving you one of the most versatile jackets possible. Of course, women don’t mind the dialed-in fit either—it flatters your figure while allowing full range of motion. The Gamma MX Jacket's Storm Hood fits over your helmet, so your noggin can be safe and warm at the same time.

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Arc'teryx Gamma MX Hooded Softshell Jacket - Women's

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Here's what others have to say...

5 5

sick jacket

great for out side activity , keeps your heat inside, stops the wind, very light ......that is it .... dose what i want it to do ...."the wife"

Would the Arc'teryx Atom LT Jacket fit...

Posted on

Would the Arc'teryx Atom LT Jacket fit underneath this jacket?

Best Answer Responded on

Yes! I have an Atom LT hoody in XS and it fits perfectly underneath my Gamma MX hoody in XS.

1st time ice climbing in my Gamma MX

1st time ice climbing in my Gamma MX

Posted on

5 5

My favorite piece of clothing

The Gamma MX is my favorite piece of technical clothing I own. Absolutely indispensable and I would never leave for any trip without it. The key is its amazing ability to balance breathability when I'm working up a major sweat climbing and skinning up mountains with its ability to keep the elements OUT. It will not be perfect for both because it is not a thin t-shirt and it is not a hard shell, but it really does an incredible job at balancing breathability with wind and water resistance.

My Gamma MX plus 1-2 base layers will keep me warm and dry on 10 degree days with light wind. That's probably around my lower end before I'll put on another layer. Of course, this is when I'm working hard -- as a soft shell, the Gamma is NOT meant to keep you warm in cold weather if you're standing still -- you will need insulation. Love skinning up in my Gamma and layering my Atom underneath for the ski down.

I like the cut of this jacket a lot. It's a little longer so it covers most of my butt and has a cinch if you're skiing to keep out the pow. I also like the chest and arm pockets which are very useful for when you're wearing a climbing harness. Finally, I like that they designed the hood as a singular attachment to the body of the jacket, instead of with a standalone collar, because it's easy to smoothly layer my hooded Atom underneath.

Very well designed jacket from Arc'teryx. Worth every penny.

5 5

Great lightweight shell

I bought this to replace a heavier weight soft shell for weight-saving and utility purposes. I was initially concerned about the lack of pit zips, being a great proponent of them in my other jackets, but I did not miss them after wearing the jacket for the first time. Unzipping the pockets provided enough ventilation.

It layers well with a fleece underneath and hard shell on top, but also performs very well on its own. I have used it running, cycling, mountaineering, and skiing - I would say this jacket shines in high-action activities. It is a bit thin for sitting around on cold days, but is amazingly wind proof for how thin it feels.

I agree with JKC - this does fit a bit longer than the non hooded version (something that seems true across the entire brand).

How does this jacket compare to Seeker...

Posted on

How does this jacket compare to Seeker Comp? I am looking for a really versatile option. Thank you!

Responded on

The Seeker was a comp jacket with Goretex shoulders, and a light softshell materiel in the torso; The Gamma MX uses softshell throughout and has a very light fleece laminated inside. The Gamma MX is the most versatile jacket in my closet, and gets the most use, year-round.

Looks great. I'm just getting into Arc'teryx...

Posted on

Looks great. I'm just getting into Arc'teryx garments. Will this fit under my Paclite Shell when it's wet outside?

Responded on

You didn't mention which brand -- are you referring to one of the Arc'teryx Paclite shells, like the Alpha SL or Beta SL? I have the Beta SL in XS and the Gamma MX in the same size is a tight fit underneath. It would probably fit if I sized up in the shell to a Small, but I haven't tried. I've found that Arc'teryx jackets tend to have a slimmer cut than other brands, especially in the SL series. It's a comfortable fit under my regular rain jacket which is made by Marmot.

3 5

Little More than a Hoodie

I was looking for a warm, waterproof, sturdy ski jacket. Arcteryx makes the best stuff, but this jacket was way too thin for me. Probably my own fault, I should have read that this is best for "sunny ski days". I returned the jacket. I would have loved to have kept it for spring skiing but at almost $400, I couldn't do it.

5 5

Great Soft Shell

This jacket is awesome. I just whipped it out on a nice powder day in the Wasatch and it performed beautifully. I had a pocket to put my chapstick and money in and two side pockets big enough to stash a snack. I was dry and I wasn't overheating in the sun either. The jacket did great when I fell in the piles of gorgeous fluff and it kept the wind out while I made my way down the side of Alta. It doesn't look boxy and it's super soft. I love this jacket I can't wait for another ski day in it!

Responded on

I second that motion! It's true that this jacket is thin, which just means I can wear it year-round! Yay! I took this jacket out skiing yesterday with my Stoic puffy under it and I was super-warm and incredibly comfortable. Love it!

Responded on

Yeah, I've been skiing in this jacket all week. It isn't very thick or heavy-weight, but it's so easy to layer underneath. I put my Arc'teryx Atom insulated jacket underneath and was totally warm. It was a nice, smooth layering system, and on uphill hikes, I ditched the outer Gamma jacket and just wore the Atom because it has breathable underarm panels. I did wear the Gamma as an outer shell the other day when it was snowing moderately just to see how water-resistant it is. It did just great; nothing seeped though. Granted, this was light, dry Wasatch powder falling from the sky, so you would probably still want a proper hardshell in wetter storms.

5 5

Nice jacket!

Very nice jacket from Arcteryx. I found that this hoody version has a more relaxed fit than the non-hooded version. This one also is a bit longer. You may want to size down one size if you like it to be more fitted, otherwise go with your normal size and have room for layering. It's kind of expensive for what it is, but very well made.

Diff between this jacket and their Theta...

Posted on

Diff between this jacket and their Theta HR jacket?

Best Answer Responded on

You mean the Theta AR jacket? Theta AR is Gore-Tex Pro Shell, the Gamma MX is a polartec material. That's a huge difference between materials, one's a hardshell, one's a softshell. This will breather better, The Theta will be lighter, more packable and have better abrasion resistance.

Hello out there its hard to tell the true...

Posted on

Hello out there its hard to tell the true colour of this jacket, would you say it is more orange or red?
Thanks Michelle

Responded on

Best way I can describe the color is kind of a "burnt red" color. To my eyes it's more red but there is some burnt orange in it. The color isn't as bright as it appears on the computer screen, it's a little more muted.

Is this a good jacket for walking in. I...

Posted on

Is this a good jacket for walking in. I live in ND so there are days when I'm walking and it's 7 degrees out only

Responded on

It's not going to be warm enough for walking when it's 7degree (brrr!) I'd look at the Gamma SV (high loft fleece)or, even warmer and more windproof, the Kappa SV (windstopper and primaloft)