Outdoor Research Helium UL Jacket vs Rab Gortex Waterproof trousers
Weight and specs compared for 2026 — and which one to choose.
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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Outdoor Research Helium UL Jacket vs Rab Gortex Waterproof trousers: which should you buy?
If saving weight is your priority, the Outdoor Research Helium UL Jacket wins — at 162 g it is 288 g (64%) lighter than the Rab Gortex Waterproof trousers (450 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.