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  • 4 4 5.5 4ZM3.5 4C3.22386 4 3 3.77614 3 3.5C3 3.22386 3.22386 3 3.5 3C3.77614 3 4 3.22386 4 3.5C4 3.77614 3.77614 4 3.5 4ZM1.5 4C1.22386 4 1 3.77614 1 3.5C1 3.22386 1.22386 3 1.5 3C1.77614 3 2 3.22386 2 3.5C2 3.77614 1.77614 4 1.5 4ZM2.5 5C2.22386 5 2 4.77614 2 4.5C2 4.22386 2.22386 4 2.5 4C2.77614 4 3 4.22386 3 4.5C3 4.77614 2.77614 5 2.5 5ZM4.5 5C4.22386 5 4 4.77614 4 4.5C4 4.22386 4.22386 4 4.5 4C4.77614 4 5 4.22386 5 4.5C5 4.77614 4.77614 5 4.5 5ZM6.5 5C6.22386 5 6 4.77614 6 4.5C6 4.22386 6.22386 4 6.5 4C6.77614 4 7 4.22386 7 4.5C7 4.77614 6.77614 5 6.5 5ZM7.5 6C7.22386 6 7 5.77614 7 5.5C7 5.22386 7.22386 5 7.5 5C7.77614 5 8 5.22386 8 5.5C8 5.77614 7.77614 6 7.5 6ZM5.5 6C5.22386 6 5 5.77614 5 5.5C5 5.22386 5.22386 5 5.5 5C5.77614 5 6 5.22386 6 5.5C6 5.77614 5.77614 6 5.5 6ZM3.5 6C3.22386 6 3 5.77614 3 5.5C3 5.22386 3.22386 5 3.5 5C3.77614 5 4 5.22386 4 5.5C4 5.77614 3.77614 6 3.5 6ZM1.5 6C1.22386 6 1 5.77614 1 5.5C1 5.22386 1.22386 5 1.5 5C1.77614 5 2 5.22386 2 5.5C2 5.77614 1.77614 6 1.5 6Z"

    United States

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  • 4 4 5.5 4ZM3.5 4C3.22386 4 3 3.77614 3 3.5C3 3.22386 3.22386 3 3.5 3C3.77614 3 4 3.22386 4 3.5C4 3.77614 3.77614 4 3.5 4ZM1.5 4C1.22386 4 1 3.77614 1 3.5C1 3.22386 1.22386 3 1.5 3C1.77614 3 2 3.22386 2 3.5C2 3.77614 1.77614 4 1.5 4ZM2.5 5C2.22386 5 2 4.77614 2 4.5C2 4.22386 2.22386 4 2.5 4C2.77614 4 3 4.22386 3 4.5C3 4.77614 2.77614 5 2.5 5ZM4.5 5C4.22386 5 4 4.77614 4 4.5C4 4.22386 4.22386 4 4.5 4C4.77614 4 5 4.22386 5 4.5C5 4.77614 4.77614 5 4.5 5ZM6.5 5C6.22386 5 6 4.77614 6 4.5C6 4.22386 6.22386 4 6.5 4C6.77614 4 7 4.22386 7 4.5C7 4.77614 6.77614 5 6.5 5ZM7.5 6C7.22386 6 7 5.77614 7 5.5C7 5.22386 7.22386 5 7.5 5C7.77614 5 8 5.22386 8 5.5C8 5.77614 7.77614 6 7.5 6ZM5.5 6C5.22386 6 5 5.77614 5 5.5C5 5.22386 5.22386 5 5.5 5C5.77614 5 6 5.22386 6 5.5C6 5.77614 5.77614 6 5.5 6ZM3.5 6C3.22386 6 3 5.77614 3 5.5C3 5.22386 3.22386 5 3.5 5C3.77614 5 4 5.22386 4 5.5C4 5.77614 3.77614 6 3.5 6ZM1.5 6C1.22386 6 1 5.77614 1 5.5C1 5.22386 1.22386 5 1.5 5C1.77614 5 2 5.22386 2 5.5C2 5.77614 1.77614 6 1.5 6Z"

    United States

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Proton SL Hoody Men's
€260.00

Proton SL Hoody Men's

New colourFair Trade Certified

Rating Distribution

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122 reviews with 5 stars.
26 reviews with 4 stars.
6 reviews with 3 stars.
6 reviews with 2 stars.
3 reviews with 1 star.

Overall Rating

4.6
129 out of 142 (91%) reviewers recommend this product

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Rating Summary

warmth
fit
satisfaction
comfort
fabric weight
layering
purchase
wearing
9 to 38 of 163 Reviews
9 – 38 of 163 Reviews
4 out of 5 stars.

Great, but sizing changed

2 months ago
One of my favorite pieces ever. I have one that is 2-3 years old and quite smelly after 100s of days of guiding. Got the new one and still seems to function and feel the same, but the sizing is disappointing. My old one is a large and fits perfectly, but this new 2025 version the large is too large and the medium is more snug.
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Q: Size Purchased:
A: 66
Q: Pros:
A: Wie für mich geschneidert!
Q: Activity
A: Everyday, Wandern
Q: Your Height:
A: 174

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Mountain View, HI
Age45 to 54
GenderMale
Body TypeAthletic
4 out of 5 stars.

A casual go to

a year ago
I wear this jacket at work often because it can be rainy outside and chilly in the office. I like the lightness of it and the stretchy cuffs are comfortable when Iʻm working, driving, or walking outside. The material is not noisy and the inside is soft, although the mesh has a gym wear look to it. Ideal for wearing over a t-shirt.
Q: Size Purchased:
A: Large
Q: Pros:
A: Nice stretchy cuffs
Q: Cons:
A: Mesh liner looks tacky
Q: Your Height:
A: 5ʻ11"

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Calgary
Age35 to 44
GenderMale
Body TypePetite
5 out of 5 stars.

My Go-to for Everything

a year ago
Proton Lightweight is my go-to backcountry skiing for it's warmth in arms and hood, but breathable, lightweight and packable at the same time. It's also the jacket I normally use for winter-trailrunning for the same reasons. It's definitely a must-have one!
Q: Activity
A: Backcountry skiing, Trailrunning

Originally posted on Proton Lightweight Hoody, 2023-2024

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Québec
Age55 to 64
GenderMale
Body TypeAthletic
5 out of 5 stars.

Chaleur et excellente gestion de la transpiration.

a year ago
Ce vêtement permet un confort en soirée autour des feux de camp pour les températures entre 15 et 20 degrés Celsius. À l’effort le type de tricot intérieur permet une excellente gestion de la transpiration. Je porte régulièrement ce vêtement lorsque la température est de moins de 15 degrés Celsius. Se compacte relativement bien et très léger.
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Q: Pros:
A: Chaleur et gestion de la sueur
Q: Activity
A: Randonné
Q: Your Height:
A: 1,75 m

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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UK
Age45 to 54
GenderMale
Body TypeAthletic
5 out of 5 stars.

Great

a year ago
I’ve used this for several months, it’s a great versatile jacket that can be used as a stand alone piece or layered under a hardshell, it’s breathable and compresses down well when not needed, the fit is spot on for me, one of the best jackets I’ve had in a long time
Q: Pros:
A: Breathable
Q: Cons:
A: Non
Q: Activity
A: All round
Q: Your Height:
A: 6.1

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Verzé
Age25 to 34
GenderMale
Body TypeAthletic
5 out of 5 stars.

Super midlayer active

a year ago
J'ai acheté la Proton LT pour les face nord en escalade en été et au final je l'utilise quasiment toute l'année. Le polartec Alpha est super agréable et respire bien! Pour moi c'est la veste à utiliser en escalade dés que le vent se lève ou qu'il fait frais. Je l'utilise aussi beaucoup en ski de rando quand les températures sont supérieurs à 0-5 degrés. Si il ne faudrait en avoir q'une pour des sorties actives en montagne se serait celle ci!
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Q: Pros:
A: Légère, respirante,
Q: Activity
A: Escalade, Ski de randonnée, Freeride, Alpinisme
Q: Your Height:
A: 178

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Vancouver, BC
Age25 to 34
5 out of 5 stars.

Great gift for dad!

a year ago
We bought this for my dad’s birthday because he always wanted an Arc’teryx jacket. It was light and practical enough for Vancouver’s climate and the quality felt great. Online customer service was helpful too. The charcoal was a really nice colour. He’s 6” and a bigger fellow; the sleeves on the XL was just a little long on him.
Q: Activity
A: Casual/city wear

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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San Francisco, CA
Age25 to 34
GenderMale
Body TypeSolid
5 out of 5 stars.

Lightweight and easily packable

a year ago
I bought this jacket about 4 months ago and it’s been such a nice jacket to own. I like how lightweight it is while also being cozy. It’s kept warm through some cold nights. I do like that though it’s not packable, I am able to fold it and put it in my side bag with ease to travel with.
Q: Pros:
A: Lightweight, cozy
Q: Cons:
A: No adjustable wristbands
Q: Activity
A: Hiking
Q: Your Height:
A: 5’10”

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Utah
Age18 to 24
GenderMale
Body TypeSolid
5 out of 5 stars.

Awesome active jacket but really warm

a year ago
This jacket is super warm, it’s great if you’re getting active in it but beware unless the weather is pretty cold you might over heat. It’s also a little slim fitting if you’re a built guy
Q: Pros:
A: Warm, fashionable
Q: Cons:
A: A little too warm
Q: Activity
A: Hiking/backpacking/everyday use
Q: Your Height:
A: 6’3

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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5 out of 5 stars.

Light, warm and versatile

a year ago
Bought a medium in this revised version, which fits slightly bigger than 2022 version. Super happy with it.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Loveland, Colorado
Age45 to 54
GenderMale
Body TypeAthletic
5 out of 5 stars.

Awesome breathability

a year ago
Wore this in 30's to 50's ferenheight on a hike in RMNP on ascent and descent and was not cold or hot. Breathes well. The fit is awesome. Very comfortable.
Q: Pros:
A: Warm & breathable
Q: Cons:
A: None
Q: Activity
A: Hiking
Q: Your Height:
A: 5'10"

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Utah
Age25 to 34
GenderMale
Body TypeAthletic
4 out of 5 stars.

Great piece!

a year ago
I had the an older version in a medium size but needed to upsize due to to gaining some weight. I'm 5 feet 7 inches 190lbs and the large fits well and isn't too long, which was surprising given my smaller stature. The only issue I had was the new sleeve cuffs are a lot looser than the older version, which was tight but did the job of keeping the heat in.
Q: Activity
A: Skiing, walking

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Long Island,NY
Age25 to 34
GenderMale
Body TypeAthletic
5 out of 5 stars.

Awesome lightweight jacket

a year ago
I love this jacket as it’s a perfect fitted mid layer for my beta/ski jacket, or as a stand-alone when it’s a little chilly around the house or when going outdoors. My new go-to jacket for chilly weather. The octaloft is so comfortable on the skin.
Q: Pros:
A: Great fit, awesome feel, looks good
Q: Cons:
A: none
Q: Activity
A: Hiking, skiing, lounging
Q: Your Height:
A: 5’11”

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Age35 to 44
GenderMale
Body TypeAthletic
5 out of 5 stars.

Für Outdoor Aktivitäten und Alltag geeignet

a year ago
Die Bewertung bezieht sich noch auf den Vorgänger Proton FL Ich trage die Jacke beim Wandern mit einem T Shirt bei Temperaturen zwischen 12°C und 20°C und hatte Sie auch schon bei 5°C mit einem 200er Langarm Merino Shirt an was auch ok war solange wenig Wind wehte. Irgendwann atmet Sie dann zu gut und es wird kalt aber da kann man dann einfach einen Windbreaker überziehen und es darf noch paar Grad kälter werden. Ich bin aber auch jemand dem eher zu kalt als zu warm ist. Die Jacke ist auf jeden Fall sehr atmungsaktiv , angenehm auf der Haut durch das Ocatloft und in Schwarz noch so schlicht dass Sie super im Alltag zu tragen ist. Gerade wenn man Auto fährt , einkaufen geht und immer wechselnde Temperaturen hat, kann man die Jacke immer anbehalten da diese nie zu warm ist. Ich würde mir die Jacke jederzeit wieder kaufen.
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Q: Pros:
A: atmungsaktiv, bequem, robust
Q: Activity
A: Wandern, Fahrrad fahren , Alltag
Q: Your Height:
A: 176

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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Palo Alto
Age25 to 34
GenderMale
Body TypeSlim
5 out of 5 stars.

Functional Climbing Garment

a year ago
I've been super impressed by the comfort and performance of the Proton Lightweight Hoody. Taken it climbing on multiple occasions and have been really satisfied with how it moves and stretches under a harness. Similarly, it breathes well once you start moving on the wall or on the approach. Hood fits over a helmet as well. The inner fleece lining is incredibly comfortable and feels great. Warm when you need it and breathes when you want it. Would definitely recommend to anyone looking for a good climbing garment to keep you comfortable while climbing at the Creek in the fall or Yosemite in the spring. It's held up surprisingly well through the past year. I'm 5'8" 140lbs and elected for a medium where as I wear a small in the Atom. Felt like a medium was more comfortable for climbing related pursuits.
Q: Pros:
A: Comfortable. Breathable, Warm
Q: Cons:
A: None
Q: Activity
A: Climbing, Backpacking, Hiking
Q: Your Height:
A: 5'8"

Yes, I recommend this product.

Originally posted on Proton Lightweight Hoody, 2023-2024

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9 – 38 of 163 Reviews
Proton SL Hoody
rating 4.5854 out of 5164 Reviews

Climb comfortably in our lightest, most breathable fully insulated hoody.

The Proton SL Hoody was previously the Proton Lightweight Hoody.


€260.00

Colour:Electra


Free shipping & Free returns


Proton SL Hoody Men's

The lightest, most breathable option in our Insulation Collection, the Proton SL Hoody takes the guesswork out of warming up on cold climbs and other high-output activities in cool conditions. The knit insulation holds its loft and shape—no matter how often you stuff it into the bottom of your pack. More importantly, it allows your body to breathe, so you’re not left a sweaty mess after you have to step on the gas to get through the crux.

What's been updated: Updated with recycled Fortius™ fabric for improved durability, and chest pocket and design lines that align with the Proton Collection.

Need a heavier option? Try the Proton Hoody.

Proton

Air permeable mid layer insulation with abrasion and weather resistant outer surface.

Superlight

Superlight materials and design, emphasizing lightweight and packability over durability.

Fair Trade Certified™

Produced in a Fair Trade Certified facility. Building worker well-being into our product DNA.

Multi-use

Versatile high performance designs for diverse activities and conditions.

Articulated construction

Articulation removes restriction, so we utilize complex patterning and seam placement to create three-dimensional designs that free you to move.

Synthetic insulation

Synthetic insulation provides warmth even when wet. Abrasion-resistant and quick-drying, it delivers comfort and performance in demanding conditions.