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Montane Minimus Smock vs Outdoor Research Helium UL Rain Jacket

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

Montane Minimus Smock is the lighter option — 19 g lighter than the Outdoor Research Helium UL Rain Jacket (12% less weight). If grams matter to you, that is the one to beat.
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Spec Montane Minimus Smock Outdoor Research Helium UL Rain Jacket
Weight 142 g · 0.142 kg · 0.31 lb 161 g · 0.161 kg · 0.35 lb
Brand Montane Outdoor Research
Category Clothing - Outer Layer Clothing - Outer Layer
Montane Minimus Smock
142 g

Ultralight hardshell rain jacket at just 5 ounces. Minimalist design with half-length zip, no adjustable cuffs or hood. Designed to shed weight while maintainin...

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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.

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Montane Minimus Smock vs Outdoor Research Helium UL Rain Jacket: which should you buy?

If saving weight is your priority, the Montane Minimus Smock wins — at 142 g it is 19 g (12%) lighter than the Outdoor Research Helium UL Rain Jacket (161 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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