How to Choose Insulated Outerwear

Take the guesswork out of warming up on cold climbs and other high-output activities. The women's Arc'teryx Proton SL Hoody is breathable, lightweight, warm and durable for cool conditions.
Imported.
View the Arc'teryx Proton Product LineView all Arc'teryx Women's Synthetic Insulation JacketsBest Use | Hiking Climbing |
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Fabric | Recycled 20-denier nylon plain weave weft stretch with FC0 durable water repellent (DWR), 58 g/m2 |
Insulated | Yes |
Insulation Type | Synthetic |
Insulation | Polyester Octa Loft raschel knit insulation, 98 g/m2 |
Warmth | Warm |
Hood | Yes |
Back Length | Hip-length |
Back Length (in.) | Unavailable |
Gender | Women's |
Weight | 11 ounces |
Sustainability | Contains materials that meet the bluesign® criteria Fair Trade Certified™ factory |
XXS | XS | S | M | L | XL | XXL | XS Short | S Short | M Short | L Short | XS Tall | S Tall | M Tall | L Tall | XL Tall | 00 | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 00 Short | 0 Short | 2 Short | 4 Short | 6 Short | 8 Short | 10 Short | 12 Short | 14 Short | 2 Tall | 4 Tall | 6 Tall | 8 Tall | 10 Tall | 12 Tall | 14 Tall | 16 Tall | |
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Numerical Size | 00 | 0-2 | 4-6 | 8-10 | 12-14 | 16-18 | 00 | 0-2 | 4-6 | 8-10 | 0-2 | 4-6 | 8-10 | 12-14 | 16-18 | 00 | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 00 | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | |
Chest | 30 | 32 | 34 | 36 | 39 | 43 | 47 | ||||||||||||||||||||||||||||||||||||
Sleeve Length | 28.5 | 29.5 | 30.5 | 31.5 | 32 | 32.5 | 33.5 | ||||||||||||||||||||||||||||||||||||
Waist | 23.5 | 25.5 | 27.5 | 29.5 | 32.5 | 36.5 | 40.5 | 27 | 28.5 | 30.5 | 34 | 27 | 28.5 | 30.5 | 34 | 38 | 24 | 25 | 26.5 | 27.5 | 28.5 | 30 | 31 | 33 | 35 | 37 | 24 | 25 | 26.6 | 27.5 | 28.5 | 30 | 31 | 33 | 35 | 26.6 | 27.5 | 28.5 | 30 | 31 | 33 | 35 | 37 |
Hip | 33 | 35 | 37 | 39 | 42 | 46 | 50 | 36 | 38 | 40 | 43.5 | 36 | 38 | 40 | 43.5 | 47 | 33.5 | 34.5 | 36 | 37 | 38 | 39.5 | 40.5 | 42.5 | 44.5 | 46.5 | 33.5 | 34.5 | 36 | 37 | 38 | 39.5 | 40.5 | 42.5 | 44.5 | 36 | 37 | 38 | 39.5 | 40.5 | 42.5 | 44.5 | 46.5 |
Inseam | 30.5 | 31 | 31 | 31 | 31.5 | 32 | 32 | 28.5 | 29 | 29 | 29.5 | 33.5 | 34 | 34 | 34.5 | 35 | 30.5 | 30.5 | 30.5 | 31 | 31 | 31 | 31.5 | 31.5 | 31.5 | 32 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 |
Measurements are stated in inches unless otherwise indicated.
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This is the best light and very breathable jacket. Probably the best cross country skiing and touring jacket I have in my collection. I wish they make it in more colours. I am waiting for some vibrant reds or yellows. I have this jacket in light brownish ochre colour and I love it. But I would like to change it up sometimes. Bottom line: I highly recommend this jacket. It is my go-to item in winter.
It's an absolute winner! The fit is spot on, incredibly light, and highly breathable—perfect for all kinds of activities. It offers great water resistance with its DWR finish, works as a solid windbreaker, and layers effortlessly. Definitely a piece I’d buy again!
Fits true to size. Very warm for its weight and compactness. Great as a light warm casual layer as well as an active layer for colder ski touring days. Very versatile
Very nice jacket. Light weight and warmth for mid-40’s weather. Size up if you plan to layer over long sleeve tops as armholes are a bit tight. My other pieces from the same line of the same size are less snug. Minus one star for the zipper. It consistently catches the bumpy seam between neck line and hood panels. Could be fabric or workmanship issues. Run the zipper up and down a few times to test for smoothness before you buy.
The first time I used this jacket was on a ski traverse in the coast mountains. I wore it as a midlayer, over a merino baselayer. It was the perfect layer for this trip! It kept me warm and protected from the wind. The insulation was soft against my body and the right degree of warmth. The chest pocket was perfect for phone / snacks.
This is the unicorn of jackets and I wear it all the time. ALL THE TIME. It is my go to piece for AT, running, hiking, cross country, any high output activity in the winter where I need a little warmth and some breathability. Any time I wear it, which is all the time, the people I am with comment on how awesome it is. Other companies have started to do their own versions, but this is the best. The weight is perfect, the warmth is always good, from 0 to 40 degrees F. And I just vary what I layer with (a t-shirt or long sleeve in merino or tech material), and it's awesome. The fit is great, I am usually a small and the small fits well. I have two because i wear it so often and needed to work more colors in. My older one is from 2020, and it has held up to constant wear, the fabric has withstood a lot of wildnerness and doesn't have a rip or tear. I don't notice a huge difference in fit between the two, as other reviewers have suggested. I have the Atom, and I love that too, but if you're buying one, this is the one. :)
There are no negatives. It’s light, but warm. The fit is amazing. Chest pocket big enough to hold a phone. Breathable. Feels and fits the same as my proton vest and proton hoody — please keep making Protons (and with more colours!). Perfection in jacket form.
At first I was unsure this jacket would be warm enough given how lightweight it was, but it's the absolute perfect temperature. I wore it at nights while camping and was toasty. Easily compactable and super lightweight.
I really really wanted to like this piece but because of the insulation used I'll be returning it. when i wear flannel or a sweater it's tough to get my arms through the sleeves. oh well...
it is comfy, but disappointed in the fit, it is short in the body. It also fits snug for a large
Hi there. Thanks for your feedback on the Proton SL Hoody. We're glad to hear you find it comfortable, but we're sorry the fit didn’t meet your expectations. The Proton SL is designed with a trim fit for efficient layering and movement, which can feel snug or shorter through the body for some. As an alternative, we recommend looking at the Atom SL Hoody. That being said, we’ll make sure to pass your comments along to our design team as we continue to refine our fits.