Question 1

Je pèse 85 kilos pour 1 m83 quel taille devrais-je prendre ?

River, Arc'teryx Guest Services · Accepted Answer

Bonjour Francis, merci pour votre question. Bien qu’être à 85 kg pour 1,83 m puisse donner un point de départ, il est difficile de recommander une taille précise pour l’Atom SV Hoody en se basant uniquement sur le poids et la taille, puisque la morphologie de chacun peut varier considérablement. Pour obtenir la meilleure recommandation, nous vous conseillons de prendre vos mensurations, notamment le tour de poitrine, le tour de taille et le tour de hanches, puis de les comparer à notre grille des tailles. Si vous préférez un ajustement plus ample pour faciliter la superposition de couches, nous vous recommandons de considérer une taille au-dessus. À l’inverse, si vous recherchez une coupe plus ajustée et près du corps, une taille plus petite pourrait être préférable, à condition que vos mensurations correspondent à cette taille dans notre guide.

Question 2

Does the Atom SV have insulation in the side stretch panels.

Seymour, Arc'teryx Guest Services · Accepted Answer

Hi there, thanks for reaching out. The Atom SV Jacket is thermo-mapped for optimal performance and features full-length stretch side panels with Coreloft™ insulation to prevent overheating and humidity buildup. We hope this helps!

Question 3

Might be a bit specific, but how would this compare to the 2017 Atom LT hoody in size M, in terms of warmth and fit/size? I am often between size S and M in Arc’teryx (180cm, 155lbs), and looking for a warmer jacket.

River, Arc'teryx Guest Services · Accepted Answer

Hello there, great questions! The Atom SV Jacket will feel noticeably warmer than your 2017 Atom LT Hoody. The SV uses almost double the amount of synthetic insulation, making it the warmest piece in the Atom collection. In terms of fit, the patterning has been revised over the years: the older Atom LT had a fitted silhouette, while the Atom SV now has a regular fit, giving you a bit more room for comfort and layering. To help you compare directly with your current LT and with your own measurements, here are the dimensions for the Atom SV:

Size S 
Chest width 115.4 cm
Waist width 106.4 cm
Hem width 108.4 cm

Size M 
Chest width 123.0 cm 
Waist width 114.0 cm
Hem width 116.0 cm

Question 4

Does this jacket feature a bottom drawcord at hip level?

Helio, Arc'teryx Guest Services · Accepted Answer

Hi there, thank you for your question. Yes, the Atom SV Jacket has a drawcord at the hem so you can adjust the fit. Hope this helps!

Question 5

I wear a size S, but I find the sleeves a little long. I would like to know if it is possible to shorten the sleeves. Is this recommended?

Helio, Arc'teryx Guest Services · Accepted Answer

Hi there, thank you for your question. We don’t recommend shortening the sleeves of the Atom SV Jacket or making any modifications to the garment. Any unauthorized alteration or tailoring would not be covered by our Limited Warranty and would void future warranty coverage. At this time, Arc’teryx does not offer tailoring or sleeve‑shortening services. We understand that fit can vary from person to person, and information like this is valuable. We will make sure it's shared with our team as we continue to refine our designs and service offerings.

Question 6

I am looking for a hiking jacket for winter conditions in the great smoky mountains. As low as 25 at night and just above freezing during the day. I hike between 20-25 miles a day and move fast.  Is the atom SV a good jacket to consider for my needs?

River · Accepted Answer

Hello Greg, while warmth is subjective, and we don’t assign temperature ratings, the Atom SV Hoody is our most insulated Atom, designed for cold conditions and high-output activities. Its Coreloft™ insulation provides reliable warmth even when damp, while the breathable face fabric helps regulate temperature during fast movement. For long days covering 20–25 miles in the Great Smoky Mountains, layering will be key—pairing the Atom SV with a moisture‑wicking base layer and a weatherproof shell when conditions turn wet or windy will give you adaptable protection. If you prefer a lighter option for warmer days, the Atom Jacket may be worth exploring, but the SV offers the most warmth and versatility in the Atom family for demanding winter hikes. We hope this helps!

Question 7

Is the Atom SV suited for low activity warmth like down jackets? Would I be able to comfortably use it at 6am in my cold car? I'm looking for an alternative warm midlayer since puffers don't fit my style.

River · Accepted Answer

Hello there, the Atom SV is designed as a highly versatile synthetic insulated midlayer, built to perform exceptionally well during high-output activities where breathability and durability are key in colder temperatures. While warmth is always subjective and can vary from person to person, many find the Atom SV provides reliable comfort even in lower-activity settings, such as sitting in a cold car early in the morning. Unlike down, synthetic insulation is optimized to retain warmth when damp and to regulate temperature during movement, but it can still serve as a cozy alternative if puffers aren’t your style. For maximum comfort in static, cold environments, layering with a shell or pairing it with other insulation can enhance its performance.

Question 8

Since atom sv was updated with a more streamlined fit, does it now close to regular atom jacket which is fitted??

Luna · Accepted Answer

Hi there! Thank you for reaching out. We’re excited to hear about your interest in the Atom SV Jacket! The Atom SV has a regular fit, designed for freedom of movement and easy layering. The Atom Jacket, on the other hand, has a trimmer fit that sits closer to the body. Here’s a quick comparison of both jackets in size Medium:

Atom SV Jacket
Chest width: 123 cm
Waist width: 114 cm
Hem width:  116 cm

Atom Jacket 
Chest width:  115.8 cm
Waist width: 106 cm
Hem width:  110.5 cm

If you prefer a trimmer fit like the Atom Jacket, we’d recommend going down a size. If you’d like more room for layering, your true size should work well. You are also welcome to place an order for two sizes to try at home, and return the size that does not fit. We offer free returns within 30 days, and you can start the process anytime here: https://arcteryx.com/us/en/help/returns. We hope this helps!

Question 9

Which midlayer is warmer, Atom SV or Cerium, in most conditions? And in general, which is the warmest midlayer you have in your collection?

River · Accepted Answer

Hello Nick, thanks for your question. When comparing warmth between the Cerium Hoody and the Atom SV, it really depends on your environment and activity level. The Cerium uses down insulation, which offers exceptional warmth-to-weight and compressibility—ideal for cold, dry conditions and lower-output pursuits. The Atom SV, on the other hand, features synthetic insulation that performs better in damp environments and during high-output activities, with faster dry times and more consistent warmth when wet. It’s also the warmest option in our Atom collection, designed to deliver maximum thermal performance while maintaining versatility as both a midlayer and a standalone piece. Each excels in different scenarios, and the best choice comes down to how and where you plan to use it.

Question 10

Is this jacket “packable”, e.g. stuffs into it’s own pockets?

River · Accepted Answer

Hello Rick, no, the Atom SV Jacket is not considered “packable” in the sense of being designed to stuff into its own pocket. While it is relatively lightweight and compressible for an insulated jacket, it does not feature a built-in stuff sack or pocket-stow design like some other technical layers.

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Atom SV Jacket Men's

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