Comparison · Rain
Updated October 5, 2026
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Decides on → Tiny vs Moderate
A jacket that lives in the pack more than on you
Not sold on Amazon US.
Closest on Amazon: Marmot PreCip Eco Rain Jacket (men's). A lightweight waterproof rain shell in the same price band as the Helium. The standard Helium is not listed on amazon.com, and the Helium UL that is listed costs more.
Check current price on the listing.
Day hikes and weekends when you can try it on
Not sold on Amazon US.
Closest on Amazon: Columbia Watertight II Rain Jacket (men's). A budget waterproof rain jacket from Columbia in the same lower price band as the Rainier.
Check current price on the listing.
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| Outdoor Research Helium | REI Co-op Rainier | |
|---|---|---|
| Pack size | Tiny | Moderate |
| Durability | Thin | A bit tougher |
| Try-on | Often online | Easier in a shop |
| Budget | Often under $150 | Often under $150 |
The small-packing rain layer for backpacking, not a bushwhacking jacket.
Not sold on Amazon US.
Closest on Amazon: Marmot PreCip Eco Rain Jacket (men's). A lightweight waterproof rain shell in the same price band as the Helium. The standard Helium is not listed on amazon.com, and the Helium UL that is listed costs more.
Check current price on the listing.
A returnable trail shell. Confirm pit zips on the season you are buying.
Not sold on Amazon US.
Closest on Amazon: Columbia Watertight II Rain Jacket (men's). A budget waterproof rain jacket from Columbia in the same lower price band as the Rainier.
Check current price on the listing.
Backpackers should default to the Helium. Day hikers who run cold should default to the Rainier after trying it over a fleece.
Helium is the packable rain layer for backpackers who carry a shell more days than they wear it. The face fabric is thin. Brush, granite, and a week of bushwhacking will show. Seam tape matters more than the logo, and a shell with no way to dump heat fails on a climb even when the fabric is waterproof. Check whether the year you are buying has pit zips. It is not a bushwhacking jacket and it is not insulation. The REI Rainier is the neighbour you try on in a shop when you want a sturdier trail cut and a return. The Marmot PreCip Eco is a separate budget shell in this catalog, with its own listing. The standard Outdoor Research Helium isn't sold on Amazon US right now. The button below opens the closest match there, the Marmot PreCip Eco, which is a different jacket and not our pick.
Who should buy it. Backpackers who carry rain more days than they wear it.
Best for. A jacket that lives in the pack more than on you
Limitation. Thin face fabric
Very light · Under a $150 street band, often
Rainier-class REI shells are the try-on pick. A shop return is worth more than a slightly lighter jacket you cannot send back. This is three-season rain protection, not a ski shell in wet snow. Size it over a fleece.
Who should buy it. Hikers who want to check the hood and the cuffs in person.
Best for. Day hikes and weekends when you can try it on
Limitation. Not an alpine hardshell
Moderate · Under a $150 street band, often
Neither breathes like a premium shell. Pit zips matter more than the brand story.
These summaries come from the linked roundups, so the facts match across the site. Nothing here is a new test or a new score.
Under $150, buy a shell that keeps a day of rain out and accept that it wets out sooner than a $300 jacket. Outdoor Research Helium is the packable pick. REI Rainier is the try-on pick. A rain jacket is not insulation. The Torrentshell usually sits above this cap and is listed so you know when to leave the cap.
Hikers who need a real rain layer without an alpine shell budget.
Picks are chosen for how you will use them, not by a private lab score. Weights and ratings are the manufacturer’s published figures and can change with the model year. Prices are not listed. Open the current listing before you buy.
Default on that page. Buy the Helium if pack size matters. Buy the Rainier if you can try it on and want pit zips. Re-proof either when rain stops beading.
Hard shells for real rain. Pit zips matter more than a logo once you climb.
Under a modest budget, a shell keeps a day of rain out and wets out sooner than an alpine hardshell. Look for a hood that moves with your head, seam tape, and pit zips if you hike uphill in weather.
A rain jacket is not insulation. Wear a fleece under it. Durable water repellent fails when water stops beading. That is maintenance, not a leak, until the seams actually let water through.