OMM waterproof Kamleika Cap vs Outdoor Research Helium UL Jacket

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

OMM waterproof Kamleika Cap is the lighter option — 132 g lighter than the Outdoor Research Helium UL Jacket (81% less weight). If grams matter to you, that is the one to beat.

Spec	OMM waterproof Kamleika Cap	Outdoor Research Helium UL Jacket
Weight	30 g · 0.030 kg · 0.07 lb	162 g · 0.162 kg · 0.36 lb
Brand	OMM	Outdoor Research
Category	Clothing - Outer Layer	Clothing - Outer Layer

OMM waterproof Kamleika Cap

30 g

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Outdoor Research Helium UL Jacket

162 g

Minimalist rain jacket with Toray Dermizax 2.75-layer 15D construction, highly breathable and compressible for fast-and-light mountain use.

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OMM waterproof Kamleika Cap vs Outdoor Research Helium UL Jacket: which should you buy?

If saving weight is your priority, the OMM waterproof Kamleika Cap wins — at 30 g it is 132 g (81%) lighter than the Outdoor Research Helium UL Jacket (162 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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