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Sierra Sentinel Unisex Windbreaker – Waterproof, Windproof, and Adventure-Ready
Sierra Sentinel Unisex Windbreaker – Waterproof, Windproof, and Adventure-Ready
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Experience the freedom of trekking, climbing, or camping in a jacket that’s built to handle whatever nature throws at you. Engineered with a durable, water-resistant fabric, the Sierra Sentinel keeps you dry in sudden downpours while its windproof and thermal layers lock in warmth on chilly excursions. Scratch-resistant and antifouling properties preserve its fresh look, even after tackling rough trails or dense undergrowth.
Breathable and anti-sweat construction ensures you remain comfortable and dry from the inside out. Meanwhile, the anti-static feature delivers a cling-free fit, so you can move with ease during high-energy activities. Whether you’re conquering mountain peaks or exploring forest paths, this versatile windbreaker keeps you protected, stylish, and ready for every outdoor challenge.
Our customers tell it better than we do!
Excellent
4.7/ 5
based on 1 067 reviews
BorealisPeak Stands Behind Their Gear – And That’s Why I Stand Behind Them
BorealisPeak has taken care of me, so I feel good about taking care of them. I've been a customer for years, and my Jacket has lasted through hikes, travel, and everyday wear without losing warmth or shape. A company that stands behind its products like this deserves my loyalty. If you're thinking about getting one, do it—you won’t regret it BorealisPeak has taken care of me, so I feel good about taking care of them. I've been a customer for... BorealisPeak has taken care of me, so I feel good about taking care of them. I've been a customer for years, and my Jacket has lasted through hikes, travel, and everyday wear without losing warmth or shape. A company that stands behind its products like this deserves my loyalty. If you're thinking about getting one, do it—you won’t regret it
Mark Reynolds
Trusted by the Pros – And Now I Get Why
I’m an outdoor guide, and when I say BorealisPeak gear is worth it, I mean it. I’ve tested my Rain Jacket in torrential downpours, snowstorms, and high winds—never once got soaked. Almost everyone in my hiking group wears BorealisPeak because it just works. It’s not just hype; it’s backed by real-world performance. Trust what the pros wear. I’m an outdoor guide, and when I say BorealisPeak gear is worth it, I mean it. I’ve tested my Rain... I’m an outdoor guide, and when I say BorealisPeak gear is worth it, I mean it. I’ve tested my Rain Jacket in torrential downpours, snowstorms, and high winds—never once got soaked. Almost everyone in my hiking group wears BorealisPeak because it just works. It’s not just hype; it’s backed by real-world performance. Trust what the pros wear.
Sarah Whitmore
If You See It in Stock, Grab It!
If you see your size in stock, don’t wait—BorealisPeak gear sells out fast for a reason. I hesitated on getting the Sweater Fleece last season, and by the time I decided, my color was gone. This year, I grabbed one immediately, and wow—now I know what I was missing. It’s warm, durable, and works equally well on trails and city streets. Lesson learned: don’t sleep on BorealisPeak! If you see your size in stock, don’t wait—BorealisPeak gear sells out fast for a reason. I hesitated on getting... If you see your size in stock, don’t wait—BorealisPeak gear sells out fast for a reason. I hesitated on getting the Sweater Fleece last season, and by the time I decided, my color was gone. This year, I grabbed one immediately, and wow—now I know what I was missing. It’s warm, durable, and works equally well on trails and city streets. Lesson learned: don’t sleep on BorealisPeak!
Jessica Tran
I Didn’t Get the Hype—Until I Bought One
I used to think BorealisPeak was overpriced—until I bought the Puff Jacket. Now I get it. This thing is light, warm, and stylish—I’ve worn it on mountain hikes and coffee runs, and it never feels out of place. But what really won me over is their commitment to sustainability. Knowing my purchase supports ethical production and environmental conservation makes me love this jacket even more. It’s not just a brand; it’s a movement I used to think BorealisPeak was overpriced—until I bought the Puff Jacket. Now I get it. This thing is light,... I used to think BorealisPeak was overpriced—until I bought the Puff Jacket. Now I get it. This thing is light, warm, and stylish—I’ve worn it on mountain hikes and coffee runs, and it never feels out of place. But what really won me over is their commitment to sustainability. Knowing my purchase supports ethical production and environmental conservation makes me love this jacket even more. It’s not just a brand; it’s a movement
Cathrine
More Than Just a Jacket—It’s a Statement
When I buy BorealisPeak, I feel like I’m part of something bigger. It’s not just a jacket; it’s a commitment to quality, sustainability, and ethical business practices. My Air Zip-Neck Fleece is perfect for layering on hikes, but what really makes me proud to wear it is knowing the company fights for the environment. If you care about the planet and want gear that actually lasts, BorealisPeak is the way to go. When I buy BorealisPeak, I feel like I’m part of something bigger. It’s not just a jacket; it’s a commitment... When I buy BorealisPeak, I feel like I’m part of something bigger. It’s not just a jacket; it’s a commitment to quality, sustainability, and ethical business practices. My Air Zip-Neck Fleece is perfect for layering on hikes, but what really makes me proud to wear it is knowing the company fights for the environment. If you care about the planet and want gear that actually lasts, BorealisPeak is the way to go.
Ethan Caldwell