Rab Downpour Light Rain Jacket Review
The Rab Downpour Light ($165) is a standout ultralight rain shell that blends impressive comfort, stretch, and packability into a sleek, minimalist package. It’s not built for extended storms or daily abuse, but for ounce-counting hikers, travelers, and just-in-case trail days, it hits a sweet spot. With its soft feel and streamlined fit, it’s more wearable than many in its class—though the thin fabric and 2.5-layer build do require care. As an emergency shell or fair-weather companion, the Downpour Light is easy to love and even easier to carry.
Weather Protection
Comfort
Breathability
Weight & Packability
Durability
Sustainability
Waterproofing
2.5-layer Proflex
Weight
7.1 oz.
Fabric
20D stretch-woven nylon
Vents
None
Packable
No
Pros
Cons
Rab Downpour Light
For this season's top shells, see our guide to the Best Rain Jackets.
The Rab Downpour Light is an ultralight, minimalist shell best suited for passing showers and short stints in bad weather. Built with a thin and stretchy 2.5-layer Pertex Shield membrane, it’s not designed for extended exposure to sustained rain. Instead, it excels as an emergency layer or just-in-case shell for backpacking, day hikes, or travel in milder climates—settings where you might not need prolonged waterproof protection.
In testing, the rain jacket held up fine during brief wet spells, but I was hesitant to linger outside in a full downpour. On one particularly rainy morning up high in Washington’s Cascades, I stayed near my tent rather than venture out, concerned that the thin fabric might not keep my insulation dry during prolonged exposure. That lack of trust in storm-worthiness makes it harder to recommend for backcountry use in cold or consistently wet conditions. If you anticipate hours of weather, a burlier 3-layer shell will be the better bet.
To that end, Patagonia’s Torrentshell 3L ($179) offers far better weather protection and durability for a similar price. It’s heavier (12.4 oz. for the women’s version) and more rigid, but its H2No membrane provides more reliable coverage. That said, the Rab Downpour Light wins on weight and simplicity. At just over 7 ounces, with water-resistant zippers and extended cuffs for a bit of extra hand protection, it offers thoughtful details in a streamlined design. For fair-weather missions and ounce-counters, it’s a capable but specialized tool.
Comfort is one of the Rab Downpour Light’s biggest strengths. Like other stretchy rain jackets—such as the Black Diamond Fineline Stretch and Kuhl Stretch Voyagr—it features a flexible fabric that moves easily with the body. What sets the Downpour apart is that it combines that softness with a truly ultralight design, undercutting those competitors in both weight and bulk. Compared to crinkly, plasticky shells like the Outdoor Research Helium, it’s a breath of fresh air. The soft-touch interior, light stretch, and pliable construction make it easy to wear all day, even in stop-and-go conditions.
My first impression was that the Downpour Light felt lightweight, high-quality, and thoughtfully made—what I’ve come to expect from Rab. The jacket feels breathable (more on that next), and the fabric is less noisy and restrictive than many other budget-friendly or ultralight options. While the comfort comes at the cost of reduced durability and storm protection, this is a rain jacket I enjoy wearing. It’s perfect for variable spring and summer conditions, whether I'm hiking, cycling, traveling, or heading out for a casual walk. For just-in-case protection in fair to moderate weather, the Downpour Light is a standout for comfort and wearability.
The Rab Downpour Light strikes a middle ground when it comes to breathability. As a 2.5-layer jacket, it can’t match the performance of more premium 3-layer designs, which are generally better at managing moisture over long, sweaty days. That said, the Downpour’s thin 20-denier fabric does allow for more airflow than heavier rain shells, and it feels noticeably more breathable than burlier competitors like the 50-denier Black Diamond Fineline Stretch. The tradeoff is a reduction in durability—but if breathability is a priority, the Downpour makes a strong case for itself.
What holds the jacket back from a higher score is the lack of pit zips. Ventilation zips are essential for managing heat during high-exertion activities, and their absence limits the Downpour Light’s usefulness on steep climbs or warm-weather outings. In mild to moderate conditions, I was able to hike comfortably without overheating, but in hotter weather or during extended efforts, I’d likely want more airflow. Competitors like the Fineline Stretch and Patagonia Torrentshell 3L include pit zips, giving them an edge for technical use. Still, for a minimalist and lightweight design, the Downpour Light offers better-than-expected breathability.
At just 7.1 ounces for the women’s version (7.7 oz. for men’s), the Rab Downpour Light is a true ultralight rain shell. It ranks among the lightest jackets we’ve tested, with only the Montbell Versalite (5.8 oz.) and Outdoor Research Helium (7 oz.) coming in lighter—and neither of those offers the same stretchy, soft-feeling construction as the Rab. That combination of weight, comfort, and flexibility makes the Downpour Light a standout for minimalist kits.
Additionally, it packed down incredibly small—I rolled it into the hood and ended up with something about the size of a small zucchini. While it doesn’t include a stuff sack or stash pocket, the thin build makes it easy to squeeze into just about any pack, whether it’s a mountain biking hip pack, a trail running vest, or a compact daypack. I found it ideal for tossing in as an emergency layer on dry-weather outings where a sudden drizzle or windy peak might call for a quick shell. Compared to burlier rain jackets I’ve used in the past, the Downpour Light felt practically invisible in my pack until I needed it—which is exactly what you want in an ultralight rain layer.
The ultralight weight of the Rab Downpour Light comes at a cost—durability is clearly a weak point. The 20-denier face fabric is among the thinnest we’ve tested and requires extra care around sharp gear, abrasive rock, or even overgrown brush. For comparison, the Black Diamond Fineline Stretch uses a more robust 50D shell, while the Outdoor Research Helium steps up to 30D. With the Rab, you’ll want to be mindful of potential snags on the trail and avoid using it in overly rugged conditions.
Durability also takes a hit with the jacket’s 2.5-layer construction. Unlike 3-layer designs that sandwich the waterproof membrane between protective fabrics, the Downpour Light uses a printed coating on the interior that is more prone to wear and eventual peeling over time. We’ve used 20D, 2.5-layer jackets for years with careful handling, but they’re best reserved for light, occasional use rather than daily trail pounding. In short: treat the Downpour Light as an emergency layer or fair-weather shell, not your go-to workhorse. If you need something tougher for regular backcountry abuse, a 3-layer option will offer better long-term reliability. (For more on the topic, see our article on rain jacket layers.)
Select icon to view details:
Longevity
Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.
PFAS-Free DWR
Durable water-repellent (DWR) finishes can contain PFAS (per- and polyfluoroalkyl substances). These highly persistent “forever chemicals” are used in outdoor gear for their strong resistance to water, oil, and heat, but are linked to environmental contamination and a range of health concerns. A green check mark indicates the product uses a PFAS-free DWR, while a red X means the DWR contains PFAS.
PFAS-Free Waterproof Membrane
The membranes used in waterproof products such as rain jackets, ski jackets, and shoes can contain PFAS (per- and polyfluoroalkyl substances). These highly persistent “forever chemicals” are valued for their resistance to water, oil, and heat, but are linked to environmental contamination and a range of health concerns. A green check mark indicates the product’s waterproof membrane is PFAS-free, while a red X means it contains PFAS.
Recycled Materials
Recycled materials are prevalent in outdoor gear, with nylon, polyester, wool, and down among the most common, but the composition varies widely. A green check mark indicates the product is made with a substantial amount of recycled materials (100% recycled or the core fabric that makes up most of the product is recycled), a yellow check means it contains a moderate to small amount of recycled materials, while a red X means there are no recycled materials in the product.
Bluesign Approved
Bluesign Technologies, based in Switzerland, operates a third-party textile management system that ensures materials are manufactured to strict environmental, chemical, and worker safety standards. A green check mark indicates a product is either a Bluesign Product (contains at least 90% Bluesign-approved fabrics and 20-30% Bluesign-approved accessories) or features a significant amount of Bluesign-approved materials. A yellow check mark means it uses some Bluesign-approved materials but less than the aforementioned category, and a red X means there are no Bluesign-approved materials in the product.
Responsible Manufacturing
This criterion evaluates a brand’s commitment to fair wages, safe working conditions, and reducing environmental impact through certifications and programs like Fair Trade Certified, Fair Wear Foundation, Worldwide Responsible Accredited Production (WRAP), and the Fair Labor Association, while also recognizing brands that manufacture primarily in the U.S. or Europe under strict labor and environmental regulations. A green check mark indicates a brand meets our responsible manufacturing criteria, while a red X means it does not.
Recycled and/or Reduced Packaging
Packaging can add significant waste to outdoor gear purchases, so many brands work to reduce its impact by using recycled materials, incorporating Forest Stewardship Council-certified paper products, and minimizing plastic and paper use. A green check mark indicates a brand uses recycled or reduced materials across all of its packaging, a yellow check indicates moderate or limited use of recycled or reduced packaging, and a red X indicates the brand does not make either of these efforts.
Repair Services
Repair services extend the lifespan of outdoor gear and reduce overall consumption, though programs vary widely. Some brands offer comprehensive repairs for a range of issues, while others provide limited or no repair support. A green check mark indicates a robust repair program, a yellow check mark indicates limited repair services, and a red X indicates the brand does not offer repair services.
Resale and/or Recycling Services
Resale and recycling programs help keep outdoor gear in circulation longer and out of landfills, ranging from trade-in resale platforms that offer store credit to take-back initiatives that recycle products at the end of their usable life. A green check mark indicates a brand offers both resale and recycling programs, a yellow check mark indicates it offers one or the two, and a red X indicates it offers neither.
Carbon Footprint Tracking
This criterion evaluates whether a brand measures, reports, and works to reduce its greenhouse gas emissions using established frameworks such as the Higg Index, Greenhouse Gas Protocol, or The Change Climate Project. A green check mark indicates a brand publicly reports greenhouse gas emissions data, sets clearly defined reduction targets, and uses established tracking frameworks such as Higg or The Change Climate Project. A yellow check mark indicates the brand tracks emissions and outlines reduction goals but provides limited data, lacks science-based verification, or does not clearly report progress. A red X indicates the brand does not appear to track greenhouse gas emissions or provides so little information that its efforts cannot be verified.
Annual Impact Report
Annual impact reports provide transparency and accountability by outlining a brand’s sustainability efforts across areas such as material sourcing, greenhouse gas emissions, waste, water use, supply chains, and packaging. A green check mark indicates a brand publishes a detailed, brand-specific impact report that closely aligns with our sustainability criteria and leaves little room for ambiguity. A yellow check indicates a brand provides some relevant sustainability reporting but lacks detail in key areas or is covered only briefly within a parent company report. A red X indicates a brand does not regularly publish an impact report.
Hood
The Rab Downpour Light’s hood balances simplicity and function. A single cinch cord adjusts both the crown and face opening, allowing you to fine-tune the fit without excess bulk. It held securely in moderate wind and stayed in place without fuss. The hood isn’t helmet-compatible but fits snugly over the head, making it ideal for hiking. When fully zipped, the collar rises above the chin, offering solid protection from wind and rain without feeling restrictive.
Storage
As a streamlined ultralight shell, the Downpour Light keeps storage minimal. It includes two tall, external hand pockets that are roomy enough for essentials and sit high enough to remain accessible while wearing a backpack with a chunky hipbelt. There are no chest or internal pockets—perfectly reasonable for a just-in-case rain shell, but something to consider if you’re seeking a jacket for everyday wear. For what it’s designed to do, the pocket layout is sufficient, but more storage would be appreciated in a more versatile, all-season shell.
Tester: 5’5” 120 lb.; 32” chest; 27” waist
Size tested: Women’s small
I typically wear a size small or extra small in rain shells, and for the Rab Downpour Light, I opted for a small to allow room for layering. The fit was spot on: the sleeves extended just past my wrists, and the hem fell comfortably below my hip bones, offering good coverage without looking oversized. The cut in the shoulders was generous, and I had full range of motion without any restriction.
While I was able to squeeze a midweight puffy underneath, it looked snug and felt like pushing the jacket’s layering limits. A lightweight insulated layer or fleece would be a more natural fit. Overall, the Downpour Light has a trim, athletic cut that leans sleek rather than boxy, giving it a refined and flattering silhouette. It looks and feels more polished than many ultralight competitors—something I appreciated both on and off the trail.
Montbell Versalite ($260): Lighter and More Technical
At 5.8 ounces for the women’s version, the Montbell Versalite undercuts the Rab Downpour Light by more than an ounce while still offering better technical performance. It uses a 2-layer Gore-Tex Infinium Windstopper with a 10-denier fabric—thinner than the Rab’s 20D shell—yet still manages to include pit zips for high-output ventilation. The Versalite is the more breathable and more packable option, and it’s built for truly ounce-counting missions. That said, the Rab is more comfortable with a softer, stretchier feel and a sleeker aesthetic. For fast-and-light performance, the Versalite is hard to beat, but the Downpour Light is the comfier—and far more affordable—companion. For more, read our Montbell Versalite review.
Outdoor Research Helium Rain ($170): More Durability, Less Comfort
The Outdoor Research Helium Rain is the standard bearer amongst ultralight rain jackets and $5 more than the Downpour Light. It also features 2.5-layer construction, but unlike the Downpour Light it has a plasticky interior that you wouldn’t want to layer on top of bare skin. Its pocket layout also isn’t as convenient: The men’s version features just one chest pocket, while the women’s has two hand pockets that aren’t very accessible under a backpack hipbelt. The Helium Rain does win out in durability—its extra-rugged 30-denier shell fabric is a lot tougher than the Downpour Light’s thin and pliable 20D fabric—but both jackets fall short in truly wet conditions. If we had to pick one for ultralight hiking or backpacking, we’d go with the more comfortable Downpour Light. For more, read our Outdoor Research Helium Rain review.
Ideal for summer hikes and short stints up high, the Downpour is an ultralight shell that protects against light rain without much weight and bulk. The stretch-woven shell and soft backer boost mobility, comfort, and breathability. However, due to the lack of pit zips we don’t recommend this jacket for rigorous activity.
Weather Protection
Comfort
Breathability
Weight & Packability
Durability
Sustainability
From Japan-based Montbell comes an impressive ultralight rain jacket that packs in a ton of features at a very low weight. The air-permeable shell and pit zips make it more breathable than the competition. But like all ultralight rain jackets, it wets out in heavy or sustained precipitation, and you’ll want to be careful with the thin shell fabric.
Weather Protection
Comfort
Breathability
Weight & Packability
Durability
Sustainability
The lightest of the light, the Helium Rain is just a bit more jacket than your average windbreaker. We love it as an emergency layer or when light rain is in the forecast, but it has major shortcomings in terms of breathability, fit, and comfort, and will soak through in sustained precipitation.
Weather Protection
Comfort
Breathability
Weight & Packability
Durability
Sustainability
Is the Downpour Light for You?
If you want an ultralight, minimalist rain shell that’s comfortable, compact, and stylish, the Rab Downpour Light is an excellent choice. It’s best suited for day hikes, summer backpacking, travel, and other fair-weather adventures where packability and comfort matter more than all-day protection. While it lacks the durability and storm-worthiness of a heavier shell, it shines as an emergency layer or just-in-case jacket for variable conditions. If you hike in milder climates or are focused on weight savings, the Downpour Light delivers a thoughtful blend of performance and simplicity.
get outside
Hiking Gear Guides
Gear Guide
Best Synthetic Insulated Jackets of 2026
Gear Guide
Best Down Jackets of 2026
Gear Guide
Best Hiking Pants of 2026
Gear Guide
Best Hiking Boots of 2026
Gear Guide
Best Hiking Shoes of 2026
Gear Guide
Best Hiking Daypacks of 2026
Gear Guide
Best Fleece Jackets of 2026
Gear Guide
Best Trekking Poles of 2026
curated for you