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Black Diamond Stormline Stretch Rain Shell vs Outdoor Research Helium UL Rain Jacket
Weight and specs compared for 2026 — and which one to choose.
Outdoor Research Helium UL Rain Jacket is the lighter option — 59 g lighter than the Black Diamond Stormline Stretch Rain Shell (27% less weight). If grams matter to you, that is the one to beat.
Black Diamond Stormline Stretch Rain Shell
220 g
Packable waterproof shell with stretch for climbing.
Full details →Outdoor Research Helium UL Rain Jacket
161 g
2.75-layer ultralight rain jacket with 15-denier Pertex Shield shell. Packs into its own chest pocket. Rated for sustained heavy rain.
Check price Full details →Black Diamond Stormline Stretch Rain Shell vs Outdoor Research Helium UL Rain Jacket: which should you buy?
If saving weight is your priority, the Outdoor Research Helium UL Rain Jacket wins — at 161 g it is 59 g (27%) lighter than the Black Diamond Stormline Stretch Rain Shell (220 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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