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Arc'teryx Cerium SL vs Patagonia Down Sweater

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

Arc'teryx Cerium SL is the lighter option — 165 g lighter than the Patagonia Down Sweater (41% less weight). If grams matter to you, that is the one to beat.
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Spec Arc'teryx Cerium SL Patagonia Down Sweater
Weight 235 g · 0.235 kg · 0.52 lb 400 g · 0.400 kg · 0.88 lb
Brand Arc'teryx Patagonia
Category Clothing - Mid Layer Clothing - Mid Layer
Arc'teryx Cerium SL
235 g

1000 fill power down with synthetic insulation at shoulders for durability.

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Patagonia Down Sweater
400 g

800-fill down jacket with recycled shell fabric.

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Arc'teryx Cerium SL vs Patagonia Down Sweater: which should you buy?

If saving weight is your priority, the Arc'teryx Cerium SL wins — at 235 g it is 165 g (41%) lighter than the Patagonia Down Sweater (400 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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