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Arcteryx Mens Atom SL Vest Black


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The Atom SL Vest is a lightweight insulating layer, perfect as a mid layer in cool conditions or over a base layer on summer evenings. Use it for walking, biking, running, climbing, just about anything you can imagine!


Versatile high performance designs for diverse activities and conditions.


Versatile synthetic insulated mid layers with a high degree of weather resistance.


Superlight materials and design, emphasizing light weight and packability over durablity.

Arcteryx Mens Atom SL Vest Black

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What is the Atom SL Vest?

The Atom SL is the lightest weight synthetically insulated gilet 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 Vest 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. 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?

A No-Slip Zip acts as a series of speed bumps, meaning the zip can't make it's way undone while you're out and about. You have two pockets which are just about the right size for a phone, GPS, snacks or obviously, hands, while an adjustable hem allows you to seal in heat or ventilate when working hard. A high collar provides further warmth in cool conditions.

How does the Atom SL Vest 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 gilet that works well as a mid layer in cool conditions or over a base layer on summer evenings. 

  • Two zippered hand pockets
  • Air-permeable fabric
  • Light insulation
  • Water resistant
  • High collar
  • Fleece stretch panels
  • Highly breathable
  • Perfect for high-output activities
Code : 26441-BLA-

Season : 2020S R

Weight : 0KG

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.

Technical Information

Weight: 160g


- Tyono 20, 100% Nylon

- Coreloft 40g/m insulation

- Torrent 190 with Polygiene

Care & Advice
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Arcteryx Mens Atom SL Vest Black

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Excellent customer service. Really detailed easy to understand product descriptions on the Trekitt website, and gear reviews on the Trekitt YouTube channel made it so easy to choose the right backpack for me.
Emily - May 2020
Amazing service! Very helpful in regards sizing and what most matched my needs, despite this being done over the internet. YouTube videos of products being examined are very useful also. Would definitely use again, very fast and efficient delivery. Brilliant! Highly recommended!
David R - April 2020
Highly recommend. I usually go to the shop in Hereford as staff are alwasy very helpful and knowledgeable. So this was the first time I have purchased online and the service was just as good as the shop.
Grizzy - April 2020


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