Arc'teryx Alpha SL Jacket vs Patagonia Stretch Rainshadow

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

Patagonia Stretch Rainshadow is the lighter option — 50 g lighter than the Arc'teryx Alpha SL Jacket (18% less weight). If grams matter to you, that is the one to beat.

Spec	Arc'teryx Alpha SL Jacket	Patagonia Stretch Rainshadow
Weight	280 g · 0.280 kg · 0.62 lb	230 g · 0.230 kg · 0.51 lb
Brand	Arc'teryx	Patagonia
Category	Clothing - Outer Layer	Clothing - Outer Layer

Arc'teryx Alpha SL Jacket

280 g

Ultralight Gore-Tex hardshell for alpine climbing.

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Patagonia Stretch Rainshadow

230 g

Ultralight stretch waterproof jacket for trail running.

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Arc'teryx Alpha SL Jacket vs Patagonia Stretch Rainshadow: which should you buy?

If saving weight is your priority, the Patagonia Stretch Rainshadow wins — at 230 g it is 50 g (18%) lighter than the Arc'teryx Alpha SL Jacket (280 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 - outer layer page, or browse the full gear weight database.

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