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Arc'teryx Proton LT Hoody vs Black Diamond Coefficient Fleece Hoody

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

Arc'teryx Proton LT Hoody is the lighter option — 105 g lighter than the Black Diamond Coefficient Fleece Hoody (27% less weight). If grams matter to you, that is the one to beat.
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Spec Arc'teryx Proton LT Hoody Black Diamond Coefficient Fleece Hoody
Weight 285 g · 0.285 kg · 0.63 lb 390 g · 0.390 kg · 0.86 lb
Brand Arc'teryx Black Diamond
Category Clothing - Mid Layer Clothing - Mid Layer
Arc'teryx Proton LT Hoody
285 g

Synthetic insulated hoody with excellent moisture management.

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Black Diamond Coefficient Fleece Hoody
390 g

Grid-back fleece hoody for active mid-layer warmth.

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Arc'teryx Proton LT Hoody vs Black Diamond Coefficient Fleece Hoody: which should you buy?

If saving weight is your priority, the Arc'teryx Proton LT Hoody wins — at 285 g it is 105 g (27%) lighter than the Black Diamond Coefficient Fleece Hoody (390 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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