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Arc'teryx Atom Jacket vs Patagonia Nano Puff Jacket

Weight and specs compared for 2026 — and which one to choose.

Patagonia Nano Puff Jacket is the lighter option — 14 g lighter than the Arc'teryx Atom Jacket (4% less weight). If grams matter to you, that is the one to beat.
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Spec Arc'teryx Atom Jacket Patagonia Nano Puff Jacket
Weight 355 g · 0.355 kg · 0.78 lb 341 g · 0.341 kg · 0.75 lb
Brand Arc'teryx Patagonia
Category Clothing - Mid Layer Clothing - Mid Layer
Arc'teryx Atom Jacket
355 g

Insulated mid-layer with Coreloft Compact synthetic fill and stretch panels. PFAS-free DWR finish (2025). Versatile for active use in cold wet conditions.

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Patagonia Nano Puff Jacket
341 g

PrimaLoft insulated jacket. Packable and water-resistant.

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Arc'teryx Atom Jacket vs Patagonia Nano Puff Jacket: which should you buy?

If saving weight is your priority, the Patagonia Nano Puff Jacket wins — at 341 g it is 14 g (4%) lighter than the Arc'teryx Atom Jacket (355 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.

See where both rank against everything else in this category on the lightest clothing - mid layer page, or browse the full gear weight database.

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