Is the Atom Jacket warm enough on its own in winter?

It is a lightweight insulator, not a winter coat. It works alone in fall or mild winter and as a mid layer under a shell in real cold.

How does it fit compared with older Atom models?

The fit is relaxed, and owners say newer versions feel less tailored than older ones. Sleeves run long and baggy, and the hem flares at the hips, so try it on if you are between sizes.

Does it work when wet?

The Coreloft insulation keeps some warmth when damp, and the face fabric has a PFAS-free water-repellent finish. It sheds light rain but is not waterproof.

Can I machine wash it?

Yes. Arc'teryx allows machine washing, and dry cleaning is also listed. Use a technical wash without fabric softener and tumble dry low to restore the water-repellent finish.

Is $139.83 a good price?

That is the best new price found, at REI as of November 5, 2026, and only one store lists it new. With no competing new listings, there is little room to beat it right now.

What comes in the box?

Just the jacket. No stuff sack or extra accessories are included.

Where is the Arc'teryx Atom Jacket Men's cheapest?

At REI, for $139.83, 50% off, as of our latest check.

What do buyers say about the Arc'teryx Atom Jacket Men's?

Rated 4.3 out of 5 from 99 ratings. Buyers like: Versatile as a mid layer or standalone jacket; Warm for its light weight with good wind protection; Clean lines, right amount of pockets, collar stays up. Common complaints: Fabric pills and the textile grid becomes visible; Newer version feels thinner, flimsier and less tailored than older models.

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

9 stores we checked sell it, including REI, Alabama Outdoors, downcityoutfitters, Editorialist, Galvanic.co.

Arc'teryx Atom Jacket Men's: 50% off at REI

What reviewers say

Owners rate it 4.3 out of 5 across 99 ratings and mostly praise its warmth-to-weight and versatility as a layer or standalone jacket. Complaints center on fit and durability: long, baggy sleeves, a flared hem, fabric pilling and occasional seam or zipper problems.

Pros

Versatile as a mid layer or worn alone
Warm for its light weight with good wind protection
Temperature regulates well through the side panels
Durable, well-designed construction

Cons

Fabric pills and the textile grid becomes visible
Newer version feels thinner and flimsier than older models
Sleeves are long and baggy; hem flares at the hips
Zipper unzips when stopped short; seam tears reported

From REI

Resilient Coreloft™ Compact 60 insulation is breathable, warm and light; performs if wet and resists packing out
Light, soft Tyono™ 20 air-permeable face fabric with moisture-resistant finish
Breathable 20-denier recycled nylon liner is soft next to the skin
Performance stretch fleece side panels give ventilation
FC0 durable water repellent (DWR) finish repels moisture and is PFAS-free
Fitted with articulated patterning for mobility; stretch-knit cuffs and adjustable hem drawcord

Sizes: XS, S, M, L, XL, XXL
Materials: Face: 20-denier x 20-denier ripstop nylon with DWR, 45 g/m2; lining: 20-denier recycled ripstop nylon with FC0 DWR, 40 g/m2; insulation: Coreloft 60 (60 g/m2)
Fit: Fitted, with articulated patterning for mobility and comfort
Sizing: Fits slightly large based on reviews; some reviewers find the sleeves long and baggy and the body short in size L
Returns: REI return policy applies
Shipping: Most pre-orders ship in 30 days or less; free ship to address; shipping restrictions apply
In the box: Arc'teryx Atom Insulated Jacket - Men's