Outdoor Research Helium UL Rain Jacket vs Rab Downpour Light Jacket
Weight and specs compared for 2026 — and which one to choose.
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 →Packable 2.5L waterproof jacket with fully taped seams and helmet-compatible hood; packs to softball size, 7.7 oz for all-day rain protection.
Check price Full details →Outdoor Research Helium UL Rain Jacket vs Rab Downpour Light Jacket: which should you buy?
If saving weight is your priority, the Outdoor Research Helium UL Rain Jacket wins — at 161 g it is 58 g (26%) lighter than the Rab Downpour Light Jacket (219 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.