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Arcteryx Womens Atom AR Hoody Sunhaven

£168.00 £240.00
30% off

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Other colours available:
Arcteryx Womens Atom AR Hoody Black
Arcteryx Womens Atom AR Hoody Labyrinth
Arcteryx Womens Atom AR Hoody Sunhaven

A versatile, high quality zoned insulated jacket great for all outdoor activities. Warm, wind and weather resistant, the Atom AR performs superbly as an outer jacket or an extra warm mid layer.


Versatile high performance designs for diverse activities and conditions.


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


High performance weather protection and materials, emphasizing versatility for multiple activities.

Arcteryx Womens Atom AR Hoody Sunhaven

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What is the Atom AR Hoody?

The Atom AR is an incredibly versatile All Round (AR) jacket suitable for a variety of conditions and temperatures. It's wind and water repellent while remaining highly breathable, and is more than capable of shrugging off the worst of the weather.

What is the Atom AR made of?
Fabric: The Tyono face fabric is a 30 denier nylon fabric have been treated with a Durable Water Repellant (DWR) finish for greater weather protection. The tight weave of the Tyono face fabric allows for very little air permeation which plays a very important role. This minuscule amount of air will go un-noticed but will slowly replenish the warm air that's already trapped inside the insulation and will help to keep you at a comfortable temperature.

However, it has been developed by Arc'teryx to be more durable. Not only is it more durable, the synthetic fibres have been siliconised to further increase breathability by reducing the fibres ability to hold onto moisture.

Insulation: Arc'teryx have actually used 3 different weights of Coreloft in the construction of this jacket; the main body uses 120g/m², under the arms have 80g/m² and the hood is insulated with 60g/m². This zoned insulation increases comfort by aiding temperature regulation as it allows the jacket to trap more warm air where it is needed the most.
What are the features?
The Atom AR features two hand pockets and an internal security pocket - all of which are zipped. The StormHood is fully adjustable, helmet compatable and sits snug to your head, even in strong winds. Finally, to seal out the cold, the Atom AR features a hem drawcord and low-profile Jersey knit cuffs are so soft and so smooth you'll barely notice that they are there, especially when you do need to “layer up".
How does the Atom AR fit?

As an insulating piece it’s designed to fit pretty closely to maximise the insulation. The last thing you want is a big baggy jacket as you’ll waste energy warming up all that dead air space, and conversely you don’t want it too tight either as that’ll hinder insulation's ability to trap warmth. With the Arcteryx Regular Fit there’s enough room for lightweight layers yet it still fits closely to ensure maximum performance.

The arms are nice and long and don’t restrict your movement if you have to reach when climbing or scrambling.

Where does the Atom AR fit in the layering system?

The Atom AR is an insulating jacket that works well as a stand-alone jacket on still, chilly days, but can also be layered up under a shell in colder, damp conditions.

  • Moisture-resistant outer face fabric
  • Breathable
  • Lightweight
  • Compressible and packable
  • Durable
  • Wind resistant
  • DWR finish (Durable Water Repellent) helps repel water from fabric surface
  • Composite construction
  • Articulated elbows
  • Gusseted underarms
  • Regular Fit
  • Helmet compatible StormHood
  • Insulated hood
  • Full length No Slip Zip, chin guard and wind flap
  • Stretch-knit cuffs fro seamless layering
  • Adjustable hem drawcord
  • Drop back hem
  • Laminated hem
  • Internal chest pocket
  • Two hand pockets with zippers


Code : 14664-SUN-

Season : Sale

Weight : 0KG

Sizing Information

Arc'teryx Women's Jackets & Tops Sizing Information

Measurements refer to body size, not garment dimensions.

  Chest Waist Hip Sleeve
XS  33 " 27 " 36 " 29 ½ "
S  38 " 28 ½ " 35 " 30 ½ "
M 40 " 30 ½ " 37 " 31 ½ "
L 43 ½ " 34 " 40 " 32 ½ "
XL 47 " 38 " 44" 33 "
  Sleeve Chest Waist Hip
XS 76 cm 84 cm 68 cm 92 cm
S 78 cm 89 cm 73 cm 97 cm
M 81 cm 94 cm 78 cm 102 cm
L 82 cm 102 cm 86 cm 110 cm
XL 84 cm 112 cm 96 cm 120 cm

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: 415g


Coreloft™ 120 (120g/m² in the body), Coreloft™ 80 (80 g/m² in the arms), Coreloft™ 60 (60 g/m² in the hood) insulation - Made with highly crimped multi-denier siliconised polyester yarn, this lightweight, breathable, and thermally efficient, 100% polyester staple fibre is very compressible and has excellent loft retention.

Tyono™ 30 denier shell with DWR treatment - 100% nylon

Care & Advice

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.

  • 5

    Reviewed by Jane,  On 14/11/2017 15:26:33

    Lovely fit, warm and surprisingly water resistant considering it is billed as showerproof, as I recall. Inside zip pocket is useful and the adjustable hood makes for a good fit in the rain. Sizing is good and still allows for layering up a fair bit.
    YES Jane would recommend this item
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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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