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A super lightweight insulating layer with a low profile hood and breathable side panels that is perfect for mid to high output activities such as cold days out running, climbing or biking.
A super lightweight insulating layer with a low profile hood and breathable side panels that is perfect for mid to high output activities such as cold days out running, climbing or biking.

Arcteryx Mens Atom SL Hoody Black

£119.00  £170.00  30% off
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Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for despatch to you or collection via Click & Collect on the Undetermined

Arcteryx Mens Atom SL Hoody Black Information

Season : Sale

Brand : Arcteryx

Code : 26439-BLA-

What is the Atom SL?

The Atom SL is the lightest weight synthetically insulated jacket from Arcteryx. It's perfectly suited to cold, fast-paced mountain adventures like running and biking but also works well as an extra light layer on chillier summer evenings.

What is the Atom SL made of?

Insulation: The Atom SL has 40g/m² of Coreloft Compact in the body to maintain core temperature during mid to high output activities. Coreloft is a synthetic insulation that is similar to Primaloft. However, it has been developed by Arc'teryx to be more durable. Not only is it more durable, but the synthetic fibres have also been siliconised to further increase breathability by reducing the fibres ability to hold onto moisture.

Outer Fabric: The outer is a combination of a tough 20 denier, 100% nylon fabric everywhere apart from the air permeable side panels and underarms. This is made from Torrent fabric that has an antimicrobial Polygiene treatment to avoid the build up of nasty smells and is also stretchy to give a low profile fit that improves the overall ventilation of this brilliant looking jacket. 

What are the features?

The arms are lined with a 100% polyester mesh to help wick moisture away from your skin and to avoid that annoying feeling when the outer fabric starts to cling to damp skin. A low profile, non insulated hood adds protection from the wind without over heating and the No Slip Zip works like a series of speed bumps so it won't work itself undone so when you need to keep in more heat when needed. Then finally you have 2 zippered hand pockets, luxurious shaped stretch fleece cuffs and adjustable hem to seal you inside and trap more heat.

How does the Atom SL fit?

This garment has the Arc'teryx “Trim Fit”. Trim fitting garments share motion-friendly traits with the “Regular fit”, but are patterned with lower volume for reduced bulk. The trim fit is sized for a base layer and a trim synthetic or down filled mid-layer. Check out the link below for exact sizing measurements.

Where does the Atom SL fit in the layering system?

The Atom SL is a lightly insulated jacket that works well as a stand-alone jacket on still, chilly summer nights, but can also be layered up under a shell in cold, damp conditions.

  • Moisture-resistant outer face fabric
  • Breathable
  • Insulated
  • Lightweight
  • Compressible and packable
  • Wind resistant body
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Composite construction
  • Breathable, stretch side panels for enhanced comfort and mobility
  • Mesh lined sleeves for next to skin comfort.
  • Articulated elbows
  • Gusseted underarms
  • Non insulated StormHood
  • No Splip front zip acts like speed bumps to stop the zipper from self opening
  • Stretch fleece cuffs
  • Adjustable hem drawcord
  • Drop back hem
  • Two hand pockets

How Should Your Insulated Jacket Fit?

Insulated jackets are pedantic little things. Too tight and you'll compress the insulation and limit the warmth capabilities of your brand new jacket, too loose and you'll spend hours warming up the dead space inside the jacket. Getting the correct fit isn't just about aesthetics, it will determine how warm you are. 

The Incorrect Fit

Too loose: A jacket which is too loose will keep you relatively warm, however it will take far longer to do so and will waste large amounts of your precious energy. An insulated jacket works by trapping the natural heat that your body gives off in the fibres of the insulation; this creates a micro-climate inside your jacket, keeping you warm and toasty. If your jacket is too loose, heat will be able to escape through the hem, the sleeves and the neck of the jacket; it's a little like sticking the heating on in your car with the windows cracked open - it will heat up, just incredibly slowly.   

Too tight: A jacket which is too tight is arguably worse than one that is too loose. If your jacket is far too tight, the baffles can compress to a point where the insulation can't loft effectively, limiting the amount of warmth it can trap. Essentially, it won't work! 

The Correct Fit
It's a tricky one to explain, but it's somewhere in the middle. You've first got to consider how many layers you'll tend to wear underneath; will you have just a t-shirt then the jacket, or possibly a baselayer, midlayer and then the jacket? When you've figured out your layers and you've popped your insulated jacket over the top, you shouldn't have any dead space inside. The cuffs and hem should be comfortably sealed around your waist and wrists with room to move. You should be able to lift an arm up above your head without the hem of the jacket lifting more than an inch or so, and the sleeves should be long enough that when carrying out the same motion, they aren't mid-way up your forearm. Your shoulders and chest area should have enough room so that your hands can touch behind your back without feeling restricted. 

Additional Information
Lastly, consider which activites you'll primarily be carrying out while wearing the jacket. Are you primarily using it as a winter climbing piece, or an everyday/dog walking jacket? You'll find that technical climbing jackets tend to feature a shorter cut, while urban and casual jackets feature a longer cut to offer additional warmth with less mobility.

To see examples of what a badly fitting and correctly fitting jacket looks like, click here.

Technical Information

Weight: 260g

Centre back length: 73.5cm


- Tyono 20 (100% nylon)

- Coreloft Compact 40

- Torrent 190 with Polygiene (84% polyester, 16% elastane)

Sizing Information

Arc'teryx Men's Jackets & Shirts Sizing Information

Measurements refer to body size, not garment dimensions.

  Chest Waist Hip Sleeve
X-Small 36" 29" 36" 32"
Small 38" 31" 38" 33"
Medium 40" 33" 40" 34"
Large 43" 36" 43" 35"
X-Large 46" 39" 46" 36"
XX-Large 50" 43" 50" 37"
  Chest Waist Hip Sleeve
X-Small 92cm 74cm 92cm 81cm
Small 97cm 79cm 97cm 84cm
Medium 102cm 84cm 102cm 86cm
Large 110cm 94cm 110cm 89cm
X-Large 118cm 99cm 118cm 91cm
XX-Large 128cm 110cm 128cm 94cm

Next to Skin Fit: Cut snug to the body through the entire garment to enhance moisture management and thermal efficiency.

Slim Fit: Cut slim to the body through chest, waist, hip and thigh for a low profile fit.

Regular Fit: Cut comfortably from the body through bust/chest, waist, hip and thigh for a classic fit.

Relaxed Fit: Cut loosely through the waist, hip, and thigh for a casual fit.


Measure around your chest/bust, holding the measuring tape under your armpit.


Measure around your waist at the narrowest part.


From a standing position, measure from your crotch to your ankle.


With your arms in a slightly bent position, measure from the centre of the back of your neck, along the length of your arm, to the wrist.


Measure around your hips at the widest part.

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