Black Diamond Deploy Down 0.5 vs Montbell Plasma 1000
Weight and specs compared for 2026 — and which one to choose.
Lightest down jacket at 5.3oz. Features 1000+ fill power goose down.
Ultralight down jacket with 1000-fill goose down. Men's weighs just 139g with exceptional warmth-to-weight.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Black Diamond Deploy Down 0.5 vs Montbell Plasma 1000: which should you buy?
If saving weight is your priority, the Montbell Plasma 1000 wins — at 139 g it is 21 g (13%) lighter than the Black Diamond Deploy Down 0.5 (160 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.