Is the Atom Hoodie warm enough on its own?

It works as a standalone jacket in cool, dry weather around 40–55°F. Below that, or when you stop moving, wear it under a shell or add a fleece.

How does it compare to the Atom LT?

This is the current Atom Hoody, the successor to the Atom LT. The formula is the same: Coreloft Compact 60 insulation, Tyono 20 face fabric and fleece side panels.

Does it fit true to size?

It is cut fitted, so it sits close to the body. If you plan to wear a fleece or sweater underneath, size up.

No. The DWR finish sheds drizzle and snow, but the seams are not sealed. Carry a hardshell for real rain.

Just the jacket. It has two hand pockets and a fitted hood; it does not come with a stuff sack.

Arc'teryx outerwear tends to discount at end of season and around major sales. The best new price was $199.83 at REI as of November 4, 2026.

Where is the Arc'teryx Men's Atom Insulated Hoodie cheapest?

At REI, for $199.83, 16% under what the other stores charge, as of our latest check.

Where can I buy the Arc'teryx Men's Atom Insulated Hoodie?

3 stores we checked sell it, including REI, END. Clothing, Amazon.

Arc'teryx Men's Atom Insulated Hoodie

Best price now

$199.83at REIObserved Nov 4, 2026, 6:23 PM

16% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Arc'teryx Men's Atom Insulated Hoodie

The Atom Hoody is Arc'teryx's midlayer-weight synthetic hooded jacket, built with 60 g/m² Coreloft Compact insulation that keeps working when damp. A Tyono 20 nylon shell with DWR blocks wind and light rain while staying breathable, and stretch fleece side panels add mobility under a pack. At 370 g it packs small and layers under a shell. The best new price is $199.83 at REI as of November 4, 2026, with 3 stores listing it new.

What reviewers say

Owners treat the Atom as a go-to midlayer and praise its warmth-to-weight and breathability. Most criticism centers on the slim fit and the price.

Pros

Warm for its weight and packs small
Breathes well during hard effort
Hood and cuffs fit well under a helmet or shell

Cons

Fitted cut is tight across the chest and shoulders
Costs more than comparable synthetic hoodies
Shell wets out in heavy rain

Size	Chest CM	Waist CM	Hip Cm	EU	UK
XX-Small	84	69	83	42	32
X-Small	89	74	88	44	34
Small	94	79	93	46	36
Medium	102	86	100	48	38
Large	109			52
X-Large	119	104	118	56
XX-Large	129	114	128	60	50

Size

Chest CM

Waist CM

Hip Cm

XX-Small

X-Small

Small

Medium

102

100

Large

109

X-Large

119

104

118

XX-Large

129

114

128

About the Arc'teryx Men's Atom Insulated Hoodie

The Arc’teryx Atom Hoody: the jacket that goes beyond city style and mountain ascents. This Arc’teryx Atom hooded jacket is designed with fabric tech that works hard. Coreloft™ Compact 60 insulation locks in warmth even when drizzle arrives, while Tyono™ 20 fabric keeps airflow steady so you don’t overheat. Plus, a rec