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We asked expert hikers to test the XT Series. Here’s what they found

 

Every piece of Kathmandu gear gets tested before it reaches the trail. With the XT Series, we went further. 

 

Not because we had to. Because XT is our most advanced technical hiking system ever built, and it deserves more than a lab. So, we handed the full XT Series system to experienced hikers, climbers, long-distance lightweight walkers and outdoor storytellers. People who spend serious time outdoors. People who rely on their gear and notice the details that only reveal themselves after hours on trail in changing conditions. 

 

The testing 

 

There wasn’t a single location. No controlled environment. That was the point. 

 

We asked our experts to put the XT Series through its paces; testing durability, weight, layering, and overall performance in the environments they naturally move through. 

 

The XT Series was tested across New Zealand trails and alpine environments, Tasmania’s backcountry, and on multiday expeditions where gear has to keep performing long after first use. 

 

Over weeks of use, each expert worked with the system in their own way; layering it, packing it, moving through it, and adapting it as the day changed.  

 

Meet the experts 

 


 

Matthew Will, known as “Mowser”

 

Matthew Will, known as “Mowser,” is a Tasmania-based hiker, entrepreneur, and content creator with over 35 years of experience exploring the island’s diverse wilderness. Through his YouTube channel, Mowser brings that experience to a global audience via hiking adventures, gear reviews, and his adventures exploring lesser-known travel destinations. He has also conchored trails across Africa, Europe, Norway, and Hawaii and filters it all into practical insights for getting more from time outdoors.

 Find out more


 

Gemma McCaw


Gemma McCaw, Kathmandu’s Brand Ambassador, is an advocate for women’s wellbeing with a lifelong connection to the outdoors. From early camping trips to adventure racing, Gemma has long recognised the positive impact of time spent in nature.
Through her Ladies Who Venture community, Gemma encourages women to build confidence in nature, whether they are taking their first hike or tackling multi-day adventures. She fosters connection, resilience, and wellbeing through shared outdoor experiences.
Find out more




 

Susi Ritter

 

Susi Ritter is a German-born adventurer who left home at 18 to explore the world. She now lives and travels full-time in her van across Australia. Along the way, she developed a strong connection to hiking, camping, and life outdoors.
Sharing both the highs and hard days on the road and trail, she offers a grounded perspective on remote travel and inspires others to embrace adventure.

Find out more

 

 



Ella Garbett

Ella Garbett is a Sydney-based hiker, climber, and contributor for the adventure publication, We Are Explorers, where she shares gear insights, trail guides, and firsthand adventure stories. Deeply embedded in the local adventure community, she spends most of her spare time climbing in the Blue Mountains or exploring new multi-day routes in Tasmania.

Find out more 
https://weareexplorers.co/


 

Matt Claridge

Matt Claridge is the Executive Director of Te Araroa Trust, leading the stewardship of New Zealand’s 3,000km trail. Based in Wellington, he is focused on improving the trail, enhancing the walk for all, and advancing the Trust’s regenerative vision. With a background in sport, recreation and behaviour change, Matt is passionate about getting more people out to experience Te Araroa.

Find out more
https://www.teararoa.org.nz/matt-clarridge/

 

Elina Osborne

Elina Osborne is a Kiwi-Japanese storyteller, filmmaker, and long-distance hiker. After university, she travelled extensively, lived in New York and across the US, and eventually walked from Mexico to Canada on the Pacific Crest Trail. Since then, her work has focused on identity, landscape, and human connection through extended time outdoors. With more than 10,000kmof trails behind her — including Te Araroa — she recently spent over a year in Japan reconnecting with her roots and is now back home in New Zealand.

Find out more


 

Cam Bostock 

 


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Dan Becker

 


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Will Brendza


Find out more



 

What came through in testing 

 

Across every tester, across every environment, one thing surfaced early and consistently: this is a considered system, where each piece has a clear role and works naturally alongside the next. 

 

Matthew “Mowser” Will, a Tasmania based hiker with over 35 years’ experience hiking in some of the world's most demanding wilderness, put it simply “you can tell it’s a considered set of pieces rather than a random collection… the pieces work together really well as a layering system.” 

 

That same thinking came through from other testers. Ella Garbett described it as a whole kit working seamlessly as an ecosystem… everything hits ultralight benchmarks without feeling fragile.” 

That showed up practically on the trail. Instead of constantly adjusting or swapping layers, the XT system worked together naturally across changing conditions. Mowser described the Hybrid Fleece Hooded Jacket as “doing the job of a midlayer and a windshirt at the same time,” which meant carrying fewer pieces overall. 

 

Weight disappeared too. In Mowser’s words, “the whole system is dialled in for fast and light.” 

 

But lightweight hiking gear means nothing if it doesn't hold up. Ella Garbett found it delivered both, saying, “being able to move through rough scrub without worrying about tearing the fabric makes it far more practical for real-world trail conditions.” 

 

 For Gemma McCaw, the standout was balanceIt's strikes the perfect balance between technical performance, comfort and lightweight design. 

 

As Mowser explained, “the Octa is the big winner for me, it breathes, it traps warmth where you need it, and it dries fast. Cordura on the high-wear areas is exactly where you want it. The ultralight Aluula construction on the pack feels like a really smart combination.” 

 

Where the XT series was tested on the trail  

 

XT Series wasn’t tested in one place or in controlled conditions. It was taken into the kind of environments that expose what gear is really made of.   

 

In New Zealand, that meant exposed alpine terrain – high winds, fast-moving weather. In Tasmania, Mowser took the system across multi-day hikes where the real test isn't how the gear performs on day one; it's how it performs when fatigue sets in and the trail keeps going.  

 

Across Australian backcountry, Ella pushed it through rough scrub, abrasive rock and off-track terrain environments where lightweight materials are tested for durability in a practical way.  

And for Gemma McCaw, the testing ground was a 24-hour adventure race, where fatigue compounds, conditions shift, and gear doesn't get the luxury of a rest day. 

 

Different environments. Different demands. One system that had to answer all of them. 

 

Why realworld testing matters 

 

Lab testing sets the benchmark. Real use sets the standard. 

Because out on trail, conditions don't hold. Weather shifts. Layers come on and off. Movement never stays the same. That's where a technical hiking layering system either simplifies your day or complicates it. Where weight either works for you or against you. Where durability becomes real rather than rated. 

 

Explore the XT Series 

 

  • XT Series Octa Fleece Base Layers