Which Arc'Teryx jacket is right for you? Beta, Proton, Atom?

Why Arc'teryx Jackets Are a Must-Have for Every Outdoorsman: Our Top 3 Picks – Beta, Proton & Atom

At The Backpacker, we’re passionate about premium outdoor gear—and Arc'teryx has earned a permanent spot in our gear closets. Known for top-tier technical design, unbeatable quality, and high-performance materials, Arc'teryx jackets are more than just stylish outerwear—they're a critical part of any outdoor adventure kit.

Whether you’re trekking through alpine terrain, layering up for shoulder-season hikes, or braving unpredictable mountain weather, Arc'teryx offers a jacket designed specifically for the task. With a wide variety of shell, insulated, and hybrid options, choosing the right one can be a challenge—which is why we’re highlighting our top three go-to Arc'teryx jackets: the Beta, Proton, and Atom. Let’s dive into what makes each of these essential.

Arc'teryx Beta Jacket – Versatile Weather Protection

The Beta series is the definition of versatility. Designed as an all-around GORE-TEX hardshell, it’s built to handle a range of weather conditions and activities—from alpine climbing to rainy day hikes.

• Waterproof & Windproof: Featuring 3-layer GORE-TEX with a durable face fabric, the Beta offers full protection from wind, rain, and snow.

• Lightweight & Packable: Its minimalist design makes it ideal for layering and compact enough to stuff into a pack.

• Freedom of Movement: With articulated patterning and underarm gussets, it allows full range of motion for dynamic mountain movement.

Best For: Backcountry trips, alpine adventures, all-season hiking, and unpredictable weather conditions.

Arc'teryx Proton Jacket – Breathable Active Insulation

The Proton jacket is Arc'teryx’s answer to high-output activities in cold weather. It’s a breathable insulated jacket designed to keep you warm without overheating when you’re on the move.

• Fortius™ Air 20 Fabric: Highly breathable and abrasion-resistant outer allows heat and moisture to escape while still cutting light wind.

• Coreloft™ Continuous Insulation: Maintains warmth even when damp—ideal for sweaty climbs or fluctuating weather.

• Versatile Fit: Trim but not tight, it layers easily under a shell or over a base layer.

Best For: Climbing, ski touring, fast-paced hikes, and stop-and-go cold-weather activities.

Arc'teryx Atom Jacket – Everyday Warmth Meets Outdoor Function

The Atom series—especially the Atom LT—has become one of Arc'teryx’s most beloved midlayers, and for good reason. It strikes a perfect balance between warmth, breathability, and casual wearability.

• Coreloft™ Compact Insulation: Offers reliable warmth in cold temps while remaining compressible and lightweight.

• Stretch Fleece Side Panels: Improve breathability and mobility during movement-heavy activities.

• Highly Packable: Compresses easily into a backpack, making it ideal for layering on the trail or in town.

Best For: Everyday wear, shoulder-season hiking, layering in colder weather, and travel.

No matter where your adventure takes you, Arc'teryx jackets are designed to perform. The Beta for versatile protection, the Proton for breathable warmth on the move, and the Atom for lightweight layering and everyday utility—these three are the backbone of any well-rounded gear kit.

If you’re investing in your next jacket, consider what activities you’ll be doing most, your climate, and how you like to layer. With Arc'teryx, there’s no wrong choice—only the best choice for your next adventure.