Atom SL Jacket Men's

$176.8 ~~$260~~ In stock

Category: Men's Synthetic Insulated Puffy Jackets & Pants

This new Atom SL Jacket from Arc'teryx is the lightest weight synthetic insulation layer in the Atom series. Features include Coreloft™ stretch insulation in the chest and back, stretch fleece side panels, Fortius™ Air 20 denier outer fabric, uninsulated mesh-lined sleeves, a zippered internal pocket, and two zippered hand pockets. Great as a lightweight insulation layer for summer or as and active insulating layer for cooler temperatures. An extremely versatile layer that can be used all year round.

Details

Fortius™ Air 20 Denier Recycled Outer Shell Fabric, 88% Nylon / 12% Elastane
FC0 Water Repellent Finish
100% Polyester Coreloft™ Stretch 40gsm Synthetic Insulation in Chest and Back
Octa™ Fleece Side Panels. 100% Polyester. 40D Delta Face, 122gsm
Recycled 20d Nylon Plain Weave Weft Stretch Lining Fabric, 88% Nylon / 12% Elastane
Uninsulated Mesh-Lined Sleeves
Full Length No Slip Zip™ Front Zipper with Chin Guard
Two Zippered Hand Pockets
Zippered Internal Pocket
Stows in Pocket
Dual Adjustable Hem Drawcords
Articulated Elbows
Gusseted Underarms
Fitted
Moisture Resistant
Wind Resistant
Lightweight
Breathable
Compressible and Packable
Ultralight
Abrasion Resistant
9 oz (255 g)

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Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Charlotte ★★★★★ Oct 21, 2026

The Coreloft stretch insulation in the chest and back keeps me warm without any bulk, and the fleece side panels let me move freely—perfect for cold-weather hikes. It’s honestly the lightest puffy I own, yet it holds heat surprisingly well.

Michael ★★★★★ Oct 20, 2026

I’ve been wearing it as my midlayer on chilly morning runs, and the stretch fleece side panels move with me without any binding. It packs down small enough to stuff into my running vest, which is exactly what I needed.

George B. ★★★★★ Oct 19, 2026

The Coreloft stretch insulation keeps my chest and back warm without any bulk, and the fleece side panels let me move freely on brisk morning walks. It’s shockingly light for how much heat it holds.