Why a Quality Base Layer Matters
When you’re out on the trail, the layer sitting closest to your skin is often the most important. A good base layer acts as your personal climate control system. Its job is to regulate body temperature by wicking moisture away while still providing insulation. For hikers in Australia, that means all-season versatility, staying warm in alpine weather but breathing well enough to stop you overheating on a climb or during a warm spell.
A reliable thermal top should be soft, comfortable and adaptable enough to work as a base layer, a light mid-layer or even a standalone top around camp. Quality merino pieces also offer excellent odour resistance, which is a lifesaver on multi-day trips when washing isn’t an option.
I was provided with the Zorali Merino LS Base Layer to field test and used it across multiple hikes, from short day walks to longer overnight trips, to see how it performs in real Australian trail conditions.
In-Depth Review
Comfort and Fit
The very first thing you notice is the softness. This merino top feels incredibly smooth against the skin thanks to its fine micron fibre. I’ve been sceptical of merino in the past because some pieces can feel scratchy, but this one is genuinely comfortable. In fact, it really is super-soft as Zorali claim.
Zorali calls it a regular fit, not tight, not loose. For thermal performance though, I found that a snug fit works best. Base layers trap warm air more effectively when they sit closer to the body. If you’re between sizes, I’d recommend checking the size guide carefully and considering sizing down for a closer fit.
The crew-neck design and slightly cropped length make layering easier by preventing fabric bunching at the waist. The thumb loops are well executed, with enough sleeve length that they don’t pull or restrict circulation. They’re great for keeping sleeves in place and adding a touch of warmth over the back of your hands.
Warmth and Performance
The rib fabric weight hits a nice balance. It keeps your core warm during cold mornings or at altitude, yet it breathes well enough that you don’t overheat when the pace picks up or the temperature rises. I wore it comfortably on cooler days, and even on warmer climbs it didn’t create that hot, trapped feeling you can get from some thermals.
Its versatility is one of its strengths. It works well layered under a fleece or jacket, but also functions nicely as a lightweight outer layer when stopping for a break.
Durability
After nearly two months of regular use and multiple washes, the top has held its shape extremely well. I noticed minor pilling along high-friction seams, which is normal for merino, but the fabric and stitching are both solid. Zorali backs the merino base layer with a lifetime warranty against defects, which adds confidence in its long-term durability. Most importantly, there are no holes yet which has been a common issue I’ve had with merino in the past.
Odour Control: Worth Noting
Merino is known for its natural odour resistance, and this top performs far better than synthetic or cotton alternatives. It stays fresher for longer, but it’s not magic. I found it started to develop noticeable odour after around three days of continuous wear on the trail (but I should note I didn’t use deodorant during testing). Still far better than synthetic layers, but worth being aware of if you’re planning multi-week hikes without deodorant or washing facilities.
If you need something to stay smell-free for a long stretch, pack a spare, make sure you allow it to air out between use, or be prepared to rinse it every few days.
Final Thoughts
The Zorali Merino LS Base Layer is a high-quality, comfortable and versatile piece of clothing that easily earns a place in my hiking kit and my everyday wardrobe. It balances warmth and breathability well, handles a wide range of conditions and is backed by strong sustainability credentials. I often find myself wearing it even when I am not on the trail, which is something I really appreciate about Zorali gear. It is practical, understated and not limited to hiking use. While the price sits at the higher end, its durability and performance make it a worthwhile long-term investment.
Pros and Cons
Pros
✔ Exceptionally soft, non-itch comfort
✔ Excellent warmth-to-weight ratio
✔ Versatile for base, mid or standalone use
✔ Holds shape well after repeated washing
✔ Strong sustainability credentials (RWS, B-Corp, Australian wool)
Cons
• Can start to smell after about three days of continuous wear (but that’s probably me)
• Sizing can run slightly large, especially in the cuffs
• Higher-end price point
RRP and Availability
The Zorali Merino LS Base Layer is priced at around AU$120.
You can purchase it directly from the Zorali website.
Technical Specifications
- Material: Australian merino wool
- Fabric Weight: Rib knit construction
- Fibre Diameter: Fine micron merino
- Fit: Cropped regular fit (consider sizing down for a snug thermal fit)
- Features: Crew-neck design, soft feel, cropped length for layering, thumb loops
- Certifications: Responsible Wool Standard (RWS), Woolmark Blend
- Sustainability: Fully biodegradable fibre, B-Corp certified brand, Climate Neutral Partner
- Warranty: Lifetime warranty covering defects in materials and workmanship
