What is the Atom AR Hoody?
The Atom AR is the most versatile winter jacket you'll ever own. It features a tough, low-maintenance Coreloft insulation and a weather-resistant Tyono outer fabric, making it ideal for climbing, trekking, mountaineering or even just wearing on your commute to work.
What is the Atom AR made of?
Fabric: The Tyono face fabric is a 30 denier nylon which has 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.
If that wasn't enough, Arc'teryx have used a super-breathable Permeair 20D fabric under the arms. This allows greater airflow to an area which doesn't require as much warmth and does require higher levels of breathability. A simple touch, but one that makes it suitable as a midlayer as well as an outer layer.
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 means you have plenty of warmth around your vital organs (where you'll require more warmth and protection) and less around the arms and hood where you require more flexibility and less warmth.
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-compatible and sits snug to your head, even in strong winds. A stiffened peak on the hood keeps light rain and snow off your face. To seal out the cold, the Atom AR features a hem drawcord and low-profile Jersey knit cuffs that are so soft and so smooth you'll barely notice they're there. They sit snugly underneath gloves or mitts, yet offer stretchiness if you need to pull the sleeves up to ventilate. The last thing you want when you're halfway up a climb is to have the zip come undone; Arc'teryx have engineered 'braking bumps' in the zip to prevent just that.
How does the Atom AR fit?
As an insulating piece, it’s designed to fit pretty closely to maximise the Coreloft 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 underneath 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. If you've tried an Atom from pre-2020, you'll find this one fits a little smaller.
Where does the Atom AR fit in the layering system?
Thanks to the super-breathable side panels and excellent fit, the Atom works as a toasty midlayer under a shell just as well as a protective outer layer in milder conditions. The beauty of this jacket is that even if it does get soaking wet, it'll still provide warmth.
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Water and wind-resistant outer fabric
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Breathable side panels
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Coreloft insulation is zoned
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Compressible and packable
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DWR finish (Durable Water Repellent) helps repel water from fabric surface
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Articulated elbows
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Gusseted underarms
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Helmet-compatible StormHood
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Insulated hood
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Stretch-knit cuffs for seamless layering
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Adjustable hem drawcord
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Drop back hem
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Internal chest pocket
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Two hand pockets with zippers
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No Slip Zip