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Arc'teryx Alpha SL Anorak vs Arc'teryx Helium Jacket

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Arc'teryx Alpha SL Anorak Arc'teryx Helium Jacket
Weight 305 g · 0.305 kg · 0.67 lb 162 g · 0.162 kg · 0.36 lb
Brand Arc'teryx Arc'teryx
Category Clothing - Outer Layer Clothing - Outer Layer
Arc'teryx Alpha SL Anorak
305 g

Minimalist ultralight Gore-Tex Pro hardshell, 10.8oz, emergency weather protection

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Arc'teryx Helium Jacket
162 g

Ultralight waterproof-breathable rain jacket at 5.7 oz using N10p-X AC nylon with Gore-Tex technology. Packable into chest pocket. Men's medium.

See it in your base weight → Full details →

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Arc'teryx Alpha SL Anorak vs Arc'teryx Helium Jacket: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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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