This article originally appeared on The Trek, which you can read here.
Quick Verdict
The Arc’teryx Beta SL Jacket is a high-quality rain jacket with premium features that perform well in rough conditions. Free from “forever chemicals,” its new waterproofing technology holds up but does wet out faster than expected. Thoughtful designs lend to wear in various pursuits, but also come with a higher price tag.
Best for
- Hikers and climbers prioritizing lightweight, technical performance
- High alpine or variable weather conditions
- Those who value premium features and don’t mind paying for them
Not ideal for
- Budget-conscious hikers
- Casual day hikers or occasional users
- Anyone expecting top-tier performance without regular maintenance
Standout feature
The long pit zips are a game changer. They provide much-needed ventilation and make the jacket far more wearable during high-output efforts in wet conditions.
Biggest drawback
The price is steep, especially considering the jacket can wet out relatively quickly. At $500, expectations are high, and not fully met.
Bottom line
A solid, well-designed rain jacket that performs as advertised, but isn’t worth the price for most hikers.
[dropcap]A[/dropcap]s dark clouds gather in the distance and rolling thunder can be heard, hikers anxiously don their rain jackets in preparation for the impending storm. You don’t want to second-guess the gear you brought, and proper rain gear is crucial for weathering any storm. With high alpine adventures in mind, Arc’teryx created the Beta SL Jacket to be a lightweight and dependable jacket hikers can rely on.
Arc’teryx Beta SL Jacket At a Glance
MSRP: $500
Weight: 10.6oz (Women’s) | 12oz (Men’s)
Materials: 40dx70d 3L GORE-TEX ePE with C-KNIT backer, plain weave recycled nylon, FC0 DWR – 100% Nylon with ePE and PU Membrane
Size Range: XXS-XXL
Circumstances of Review
Spring and summer in the American Southeast are known for being wet and humid. I live and recreate in East Tennessee and spend my days exploring the Great Smoky Mountains National Park. The Smokies have a reputation for bad weather, and it isn’t uncommon to be caught unaware in a downpour.
I tested this jacket during multiple day hikes, backpacking trips, and wore it while running errands around town.
Behind the Name
Arc’teryx products can be classified in three ways. First, there’s the collection that product belongs to, which organizes products by activity (such as Climb, Trail, and Ski & Snowboard). Next, items in the same product family (Alpha, Beta, Gamma, Delta, and Rho) share certain design characteristics. Lastly, the product modifier is the two mysterious letters at the end of many Arc’teryx product nammes. These give you information about that individual item’s features and intended use (AR for all-round, SL for superlight, etc.).
Knowing the lingo makes it easier to break down the design of the Beta SL Jacket. It belongs to the Trail collection and is intended “for technical mountain activities, durable and protective designs with a focus on freedom of movement for remote and varied conditions.” It’s part of the Beta family, which was designed to be versatile and perform well during diverse activities and varying conditions. Finally, the SL modifier stands for Superlight, meaning that design emphasis went towards weight and packability over durability.
Key Features of the Arc’teryx Beta SL Jacket
Waterproof and Windproof
Built with GORE-TEX, the Beta SL jacket was created to protect against harsh winds and pelting rain. The newly created GORE-TEX ePE membrane is free from harmful forever chemicals (more on that below) that were previously used in waterproof materials.
Pit Zips
Thoughtful design includes long armpit zippers to increase ventilation. When pushing hard uphill, opening up the pit zips releases excess body heat and cools you down. It’s hard to get airflow in a rain jacket, but this feature works to regulate body temperature.
3 Zippered Pockets
This jacket isn’t lacking in pockets. Two large hand pockets adorn the front of the jacket, and a laminated internal chest pocket keeps important things safe and dry.
Watertight YKK Zippers
All zippers on the Beta SL jacket are watertight YKK brand zippers. This feature elevates the jacket to a premium level by ensuring that items tucked inside the pockets for safekeeping are kept truly safe and dry.
Adjustable Velcro Cuffs
The wrist cuffs are outfitted with Velcro to ensure that they are easily adjustable, no matter the conditions. Using Velcro means that adjustments are easily made with bare hands or gloves.
Helmet-Compatible Hood
The large hood provides full coverage without impacting visibility. Three cords make adjusting the hood easy, even if you’re wearing a helmet.
Fitted Design
The snug fit prevents the Beta SL jacket from feeling bulky. The sleek design contours the body and makes movement easy, and promotes mobility.
RECCO Reflector
The built-in RECCO Reflector aids in emergencies. This lightweight, passive transponder requires no maintenance and can help Search and Rescue teams locate individuals buried under snow or lost in the mountains.
What’s the Big Deal About GORE-TEX?
GORE-TEX waterproof-breathable membranes have long been the industry standard when it comes to all things waterproofing. Many notable brands have products that are made using GORE-TEX, including outerwear, shoes, and accessories.
In recent years, GORE-TEX and other manufacturers have been scrutinized for using Perfluorinated Chemicals (PFCs) in their membranes and Durable Water Repellent (DWR) coatings.
PFCs are a type of per- and polyfluorinated substances (PFAS). Because these chemicals don’t break down naturally and can cause environmental harm and health risks, they are often called “forever chemicals.” In response to health and environmental concerns, GORE-TEX unveiled the “next generation” of membrane: expanded polyethylene (ePE). The company describes ePE as being thinner, lighter, and PFAS-free.
Arc’teryx Beta SL Layer Breakdown
Now let’s take a closer look at the composition of the Arc’teryx Beta SL Jacket. Imagine the different materials as layers placed atop one another. The outer layer with the DWR finish is made of recycled Nylon. The middle layer is the GORE-TEX ePE membrane, and the inner layer of the jacket is the backer.
We’ve already discussed the ePE membrane, but let’s look at the other layers.
DWR Nylon
The “face,” or outer layer, of the jacket is “a bio-based nylon face made with fibers derived from plants,” according to Arc’teryx.
This nylon has a PFAS-free DWR finish. DWR is a hydrophobic coating that is applied to repel moisture. It’s this finish that causes water to bead up on the jacket.
C-KNIT Backer
The “backer” or internal lining of the jacket is made from GORE C-KNIT. This material is another fabric designed by GORE-TEX. The soft, circular mesh is the lining closest to the body, and was intended to be comfortable and increase mobility.
Arc’teryx Beta SL Jacket Pros
Pit Zips
No matter the time of year or the weather, keeping your body at a comfortable and safe temperature is crucial in the mountains. In the summertime especially, I hesitate to throw on my rain gear for passing showers because I just end up wet with sweat instead of rain.
An elevating feature on the Beta SL jacket is the large pit zips. If I’m pushing hard uphill in a downpour, I can still get protection from the elements without feeling like I’m suffocating in a stuffy jacket. The increased airflow of the pit zips is a game-changer, and I found myself much more likely to actually wear my rain jacket thanks to the long zipper lengths.
Watertight Zippers
The YKK zippers used on the Beta SL jacket are a step above competitors. The watertight seams around the zipper prevent water from leaking through, and the slide glides along the teeth of the zipper with minimal effort.
A small detail that makes a big difference is the elongated pull tab, which allows for easy adjustability. This easy-to-use tab is present on all the zippers on the jacket: the full frontal zipper, the pit zips, the external pockets, and the internal chest pocket.
Sleek and Smooth Fit
The fitted design and articulated patterning of the Beta SL jacket keep the profile slim and the fabric close to the body. Other jackets have felt bulky, or like they’re trying to swallow me, but the Women’s size Large fit me like a glove. I felt like the jacket actually moved with my body rather than simply covering me.
I was able to comfortably fit my midlayer underneath the jacket on chilly mornings, but I would be pressed to fit a puffy underneath it.
Easy Adjustments
To maintain a sleek fit, the Beta SL jacket has a cinchable cord around the hem. This can help to keep water out, or body heat in. The Velcro cuffs are also simple to adjust, even with gloves on. The hood has a 3-cord system to make adjustments in order to increase visibility or accommodate a helmet. I found all the adjustable components easy to operate and didn’t run into any issues.
Lightweight and Durable
Weighing just over half a pound, this is one of the lightest high-end rain jackets on the market. It was easy to shove this jacket down into my pack or wrap it up and stash it in a daypack. Even when I was rough on it, the jacket held up well and is durable despite the lightweight design.
For perspective on weight, the Women’s Beta SL jacket I tested for this review weighs 10.6oz, and the cheap Frog Togg jacket I usually wear is 6.4oz. Arc’teryx has packed plenty of bells and whistles into those additional 4.2oz, and for some, the added features are worth a few extra ounces.
Appropriate Pockets
On other jackets, I have thought the pockets were too small or shallow. In the Beta SL, I was able to comfortably slide my hands in and out of the external pockets. As a bonus, my phone also fits easily inside the roomy pockets.
Many rain jackets lack a chest pocket. This is a feature I like, and I thought the internal design was a step above placing it externally. The advantage of an internal check pocket is that there are extra layers of fabric protecting this pocket, so it’s a good place to stash things you really don’t want to get wet. Online, this pocket is sometimes even called a “security pocket,” and it’s laminated to keep things extra safe and dry.
Made in a Fair Trade Certified Factory
As a consumer, I like to know that I’m giving my money to companies that are ethically and environmentally focused. This can be seen in upgrading to the advanced technology of the ePE membrane and moving away from PFAS materials, as well as in the manufacturing of the Beta SL jacket.
Arc’teryx was founded and is based in Canada (and even has its own factory in Greater Vancouver), but plenty of their products are made overseas. The Beta SL jacket is made in a Fair Trade Certified facility in Vietnam, and the skilled garment workers who made this product receive Fair Trade premiums.
Arc’teryx Beta SL Jacket Cons
Extremely Expensive
The biggest con for me is the price. I have a really hard time rationalizing paying the same price for a rain jacket as I would for a tent (and let’s be honest, plenty of tents are actually cheaper than this jacket). Arc’teryx can be considered a “luxury” brand in the outdoors, and while they make quality products, part of the brand’s appeal is as a status symbol.
Without a prodeal or some other discount, it’s not realistic for many hikers to pay this amount of money for a piece of clothing, especially when there are similar products for less than half the amount. If you are budget-conscious, this is not the jacket for you.
Wets Out Quickly
In the item description for the Beta SL jacket, there is a whole paragraph about how the face fabric may wet out quicker in products with the ePE membrane. “Wetting out” refers to the DWR not properly doing its job so that water is absorbed in the outer fabric instead of beading up and rolling off like it’s intended.
The description goes on to say that “this does not affect the waterproofing of the membrane itself,” and can be remedied by washing and drying the jacket to remove the oil contamination and revitalize the DWR.
In my testing, I noticed the jacket wetted out faster than I expected. We’re not talking in hours or even minutes, but in seconds. The ePE membrane did its job and I never truly soaked through, but it’s worth noting.
Especially with this price tag, I don’t think this should be the case with a brand-new jacket. The fact that it’s enough of a problem for there to be a disclaimer on the product website is eyebrow-raising. It is a problem that’s easily fixed with a wash, but it leads me to question why it’s a problem in the first place.
“Breathable” Is Relative
While the jacket is lightweight and the pit zips increase ventilation, it’s still a rain jacket. They aren’t known for being the most airy garments. The Beta SL is advertised as being breathable, but without the pit zips open, it’s still hot and humid inside. No matter how lightweight, any kind of waterproofing is going to decrease breathability.
According to the GORE-TEX website, each square inch of the membrane has nine billion pores, all of which are 20,000 times smaller than a water droplet, but 700 times bigger than a water vapor molecule. This porous membrane is what allows water vapor (sweat) to pass through, but keeps wind and rain out. However, this is no longer true when the material wets out, as the damp material keeps water in.
Compared to other rain jackets I have used, I do think the Beta SL is more breathable. I didn’t get as hot and sweaty, but I still got hot and sweaty. I think that’s just the universal plight of all rain jackets, but it’s still worth noting.
Conclusion
In all honesty, I am torn with my overall impression of the Beta SL jacket. I think it’s a good rain jacket, and based on the product itself, I would recommend it. My hesitation comes down to the price. My biggest splurge on gear is usually reserved for my Big Three, and I can’t wrap my head around paying full price for this jacket. If you can get it on sale, then absolutely snatch it up!
The jacket itself is a high-quality product that is versatile and performs well. If price isn’t an issue for you and you have high alpine ambitions, this is a solid choice. It is lightweight, durable, and easy to adjust. The drawbacks are that it may wet out quickly and still has breathability limitations.
Overall, I think it is a good product, but I don’t think it’s worth the price. Call me cheap, but I think there are plenty of similar products that do just as good a job at a far more reasonable price.
[button color=”green” size=”big” link=”https://www.rei.com/product/234978/arcteryx-beta-sl-jacket-womens” ]Shop the Women’s Arc’teryx Beta SL Jacket[/button]
[button color=”green” size=”big” link=”https://www.rei.com/product/235112/arcteryx-beta-sl-jacket-mens” target=”blank” ]Shop the Men’s Arc’teryx Beta SL Jacket[/button]
Comparable Rain Jackets
REI Co-op Teris GTX Rain Jacket
MSRP: $249
Weight: 20.5oz (Women’s), 24oz (Men’s)
Materials: Recycled polyester taffeta (bluesign approved); chinguard: polyester tricot (bluesign approved); 2-layer GORE-TEX ePE waterproof/breathable membrane made without PFAS
Size Range: XS-XXXL
Rab Namche GORE-TEX Jacket
MSRP: $330
Weight: 13.7oz (Women’s) | 15.4oz (Men’s)
Materials: 75D Recycled GORE-TEX 3-Layer construction ePE waterproof technology with PFCecFree DWR
Size Range: XS-XXL
Outdoor Research Grandridge GORE-TEX Jacket
MSRP: $379
Weight: 16.6oz (Women’s) | 18.2oz (Men’s)
Materials: bluesign Approved Gore-Tex 2L ePe 100% Recycled Poly 70D shell; 100% Polyester VerticalX Octa Insulation at Center Back and Front Body; bluesign Approved 100% Recycled Polyester 50D Taffeta Lining in Hood; 50D Polyester Tricot Brushed Mesh Lining at Back Side Body.
Size Range: XS-XXL
For a more in depth look at what rain jackets thru-hikers are wearing in this year, check out The Best Backpacking Rain Jackets for Thru-Hiking in 2026 on The Trek.
The Arc’teryx Beta SL rain jacket was donated for purpose of review
Magic in the Mountains 
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