OMM waterproof Kamleika Cap vs Outdoor Research Helium UL Jacket (men's)

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

OMM waterproof Kamleika Cap is the lighter option — 131 g lighter than the Outdoor Research Helium UL Jacket (men's) (81% less weight). If grams matter to you, that is the one to beat.

Spec	OMM waterproof Kamleika Cap	Outdoor Research Helium UL Jacket (men's)
Weight	30 g · 0.030 kg · 0.07 lb	161 g · 0.161 kg · 0.35 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 (men's)

161 g

Minimalist rain jacket in 2.75-layer 15D Toray Dermizax fabric. Packs into its own pocket for easy stowing. 5.7 oz.

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OMM waterproof Kamleika Cap vs Outdoor Research Helium UL Jacket (men's): which should you buy?

If saving weight is your priority, the OMM waterproof Kamleika Cap wins — at 30 g it is 131 g (81%) lighter than the Outdoor Research Helium UL Jacket (men's) (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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