Question 1

quelle est la différence avec la atom lt que j'avais ? quel modèle s'en rapprocherait le plus ? (je ne vois pas la LT sur votre site)

River, Arc'teryx Guest Services · Accepted Answer

Bonjour Aurélien, la différence entre votre ancienne Atom LT et l’Atom SL est surtout technique : l’Atom LT (aujourd’hui simplement nommée Atom) utilisait une isolation Coreloft 60 g/m² avec des panneaux stretch fleece latéraux, ce qui offrait un vrai équilibre entre chaleur active, respirabilité et mobilité pour des activités intenses par temps froid. L’Atom SL, elle, est conçue comme une version ultra‑minimaliste : isolation Coreloft Stretch 40 g/m², tissus plus légers, moins de panneaux extensibles, et une construction pensée pour les sorties estivales, les approches rapides ou comme couche d’appoint très compacte. Si vous cherchez l’équivalent direct de votre LT, le modèle qui s’en rapproche le plus est l’Atom Hoody, puisque nous avons simplement renommé l’Atom LT en Atom — même construction, même niveau d’isolation, même rôle dans le système de couches.

Question 2

Solo secar en secadora?

Luna · Accepted Answer

Hola Antonio, gracias por tu pregunta Para todos nuestros productos, te recomendamos que sigas las instrucciones de cuidado que figuran en la etiqueta blanca de la prenda. La Atom SL Hoody debes secarla en la secadora a temperatura baja o en el ciclo delicado para ayudar a recuperar el volumen de la fibra hueca aislante. Puedes encontrar más consejos sobre el cuidado de prendas con aislamiento sintético en nuestra guía ReCARE: https://arcteryx.com/ca/en/help/product-care/wash-dry-synthetic-insulation/. ¡Esperamos que esto te ayude!

Question 3

io vorrei una giacca a vento senza imbottitura classica leggere che si possa utilizzare sempre qual è quella giusta?

Seymour, Arc'teryx Guest Services · Accepted Answer

Salve, grazie per averci contattato. Se stai cercando una giacca a vento leggera senza isolamento, ti consigliamo in particolare la felpa con cappuccio Squamish. È leggera, ripiegabile, resistente al vento e progettata per condizioni miti ma mutevoli, il tutto senza alcun isolamento. La felpa con cappuccio Atom SL è la nostra Atom più leggera, ma include un isolamento sintetico elasticizzato, quindi la felpa con cappuccio Squamish sarà la scelta migliore per le tue esigenze. Ci auguriamo di esserti stati d’aiuto.

Question 4

How would the actual fit compare between the Atom sl and the Proton sl ? Thank You !

Sophie · Accepted Answer

Hi Dennis, thanks for your question! Both the Atom SL Hoody and Proton SL Hoody are designed with a fitted silhouette, intended to stay close to the body and minimize bulk. For comparison, here are three key measurements in our men's base size, Medium: Atom SL Hoody (M): Chest: 113.4 cm, Waist: 106.0 cm, Center front length: 59.2 cm. Proton SL Hoody (M): Chest: 115.2 cm, Waist: 108.0 cm, Center front length: 59.0 cm. If you'd like additional measurements or help finding the best fit, feel free to reach out. We’d be happy to assist! https://arcteryx.com/ca/en/help/contact

Question 5

Hello, I saw Atom SL Hoody listed with different style numbers (26889, 9560, 5409). Are these actually the same product with identical materials and specs, and the numbers only change by season? Please confirm.

River · Accepted Answer

Hello there, thanks for your question! Style number 9560 (X000009560) is the current version of the Atom SL Hoody available on our site, while 26889 and 5409 are older models that were discontinued as of Spring/Summer 2024. Although they share the same core design, the latest version includes several updates: it now features recycled Fortius™ Air 20 fabric, recycled stretch synthetic insulation, and an FC0 DWR finish for better mobility and a reduced environmental footprint. The Octa® Fleece side panels offer improved breathability with less micro shedding, and the StormHood™ is now lined and no longer stowable. Plus, the Bird logo is embroidered for long-lasting visual appeal.

Question 6

How to pack the jacket into itself

River · Accepted Answer

Hello Higgles, to pack your Atom SL Hoody into its own hood, lay it flat and fold the sleeves across the body. Then fold the jacket in half side to side, lining up the shoulders. Roll it tightly from the bottom hem toward the top until you reach the hood, then stuff the rolled body into the hood cavity. Secure everything using the hood cinch to keep it compact and streamlined.

Question 7

what means, more exactly, " moisture-resistant" in the description of the Atomic SL Hoody. Any measurements available? Resilience versus short rain showers, very light short rain?

Sophie · Accepted Answer

Hello, thank you for reaching out! The term moisture-resistant, in regards to the Atom SL Hoody, means the fabric has a durable water-repellent (DWR) finish that helps shed light moisture, such as a brief drizzle or mist. However, it's important to note that this garment is not waterproof. Unlike a GORE-TEX shell, it won’t keep you dry in sustained rain or wet conditions. For those scenarios, we recommend layering it under a waterproof shell for optimal protection. In terms of sizing, the model shown is 5'11" (180 cm) and wears a size Medium, and the center back length for size Medium is 72 cm. You can find more sizing details, including measurement charts, on the product description page under “Sizing chart and Fit Guide”. This hoody is ideal for high-output activities and light weather exposure—best suited to conditions like very light or short rain showers, but not prolonged rainfall. If you’d like further guidance on sizing or layering options, feel free to reach out through our Contact Us page. We're happy to help! https://arcteryx.com/ca/en/help/contact

Question 8

Sizing and measurements size S revised

What are the actual sizes of chest, waist and arms etc in size S? If these are given I can make a good decision.
Thanks!

Seymour, Arc'teryx Guest Services · Accepted Answer

Hi there, thanks for reaching out. Please find your requested measurements for the Atom SL Hoody below. 

Size S
Chest Width: 105.8 cm
Waist Width: 98.4 cm
Sleeve Length from Center Back: 89.7 cm

Question 9

Can a men’s Atom SL hoody fit women

River · Accepted Answer

Hello Debbie, yes, a men's Atom SL Hoody can absolutely be worn by women; however, it's important to note that the fit may differ since it's tailored for men's proportions. You might notice differences in areas like shoulder width, torso length, and overall cut. For some women, this might result in a roomier or more relaxed fit, especially around the chest and hips. If you're considering this option, we recommend trying it on or comparing measurements with our women's version to ensure the best fit for your needs. We're always happy to help guide you through the sizing details.

Question 10

What are the actual sizes of chest, waist and arms  etc in size M in the new and old one.
I have the feeling that also atom hoody size m is not the same as the one from a few years ago.
How about the Sl hoody version?

River · Accepted Answer

Hello there, we’d be happy to share the measurements of both the current version of the Atom SL and an older version. For comparison, we can also include the measurements of the Atom Hoody to help you better understand the fit differences between the models.

Atom SL 2025
Chest width: 113.4 cm
Waist width: 106.0 cm 
Sleeve length: 92.8 cm

Atom SL 2021
Chest width:  111.3 cm
Waist width: 102.4 cm
Sleeve length: 93.0 cm

Atom Hoody
Chest width: 115.8 cm
Waist width: 106.0 cm
Sleeve length: 93.5 cm

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