Get Better Trail in your inbox.

Subscribe here.
MENU

Ridge Merino Aspect Midweight Base Layer Review

Jack Yagua (gear tester)
ByJack Yaguda

Updated:

Nov 14, 2025
When you buy through our links, we may receive a commission.
Our Take:
4.7/5

The Ridge Merino Aspect Midweight hits a sweet spot for value and performance, offering the warmth, moisture management, and odor resistance of merino with a dose of nylon for added durability—all at just $80. It’s not quite as buttery soft as premium options, nor as bombproof as synthetics, but it holds up better than most merino layers and remains impressively comfortable. For resort skiing, touring in moderate cold, or multi-day trips where freshness matters, the Aspect is one of the best all-around deals in the merino base layer market.

Warmth

Warmth

3.5/5
Breathability

Breathability

3/5
Durability

Durability

3.5/5
Comfort

Comfort

4.5/5
Odor Resistance

Odor Resistance

4.5/5
Sustainability

Sustainability

2/5

Fabric(s)

84% merino, 16% nylon

Fabric weight

180 g/m²

Weight

8.3 oz.

Variations

Quarter zip, turtleneck (w), hoody (m)

Pros

High-quality merino at a lower price point than offerings from Smartwool or Icebreaker.
The 180-gram weight is a sweet spot of warmth for everyday winter use.
A classy feel, thanks to clean stitching, a long cut, and discrete thumb loops.

Cons

Even with the added nylon, the merino can cause overheating during high-output activity.
Ridge Merino’s products aren’t always in stock.

For this season's top models, see our guide to the Best Base Layers.

With its 180-grams-per-square-meter (g/m²) merino construction (blended with 16% nylon for durability), the Ridge Merino Aspect delivers dependable midweight warmth for cold-weather activities. It feels comparable to the Black Diamond Solution 150—warm enough for resort skiing or ski touring in the 20s without tipping into overheating territory. If I were skiing in the teens or below, I’d reach for a heavier option like the Smartwool Classic Thermal Merino (250 g/m²), but for anything warmer or for activities where I’ll generate heat, the Aspect’s midweight profile is spot-on. No matter what I wear, I sweat on the skintrack, but the Aspect impressed me with how well it balanced warmth and breathability—an essential trait for any base layer in my touring kit.

Breathability is always a mixed bag with merino base layers, and the Ridge Merino Aspect is no exception. While merino is naturally breathable, it’s also naturally warm. In most cases, I’ve found that its intense warmth contributes more to sweat build-up and overheating than its breathability can compensate for—for this reason, I prefer not to wear merino on mild days or when I know I’ll be working hard. The upside is that the Aspect wicks moisture effectively and retains warmth even when damp. I worked up a sweat while ski touring—no surprise there—but the layer kept me comfortable once my body cooled on the descent.


Compared to the Black Diamond Solution 150, the Aspect feels slightly thicker and warmer (expected, given its 180 g/m² construction), so on milder days when I still want the benefits of merino, I opt for the Solution. For serious heat and sweat management during high-output activities, a hybrid base layer like the Smartwool Intraknit Thermal or a fully synthetic option is a better bet. Synthetic layers such as The North Face Summit Series Pro 120 or Patagonia Capilene Thermal Weight breathe better, wick faster, and dry much quicker than merino.

Ridge Merino positions its gear at a much lower price point than most merino competitors, so I wasn’t sure what to expect in terms of quality. In practice, the Aspect feels premium, with a soft yet substantial fabric, clean stitching, and thoughtful details, such as well-designed thumb loops. At $80, it’s $40 less than the Ortovox 185 Rock'N'Wool, but comparable in overall build quality.


Durability, however, remains one of merino’s inherent weaknesses. The fabric tends to thin and develop holes in high-wear areas over time. To combat this, Ridge Merino blends the Aspect’s 180 g/m² merino with 16% nylon, which adds structure and reduces the risk of tears. The result is impressive: I saw no signs of wear during my season of testing, and another tester on our team has worn an Aspect for four seasons with only one small hole. That said, like all merino base layers, it’s best kept under other layers—wear it solo for hiking or climbing, and you’ll accelerate wear considerably.

The Ridge Merino Aspect is a highly comfortable base layer, thanks to its soft, natural feel and lack of that plasticky texture often associated with polyester-heavy blends. Compared to the Smartwool Intraknit Thermal, the Aspect feels more natural against the skin, though slightly scratchier due to its higher merino content. That said, the scratchiness is minimal and didn’t bother me at all—I found it to be an exceptionally comfortable piece for full days of wear.

Despite containing 16% nylon, the Ridge Merino Aspect performs like a true 100% merino layer when it comes to odor control. After multiple days of resort and backcountry skiing without a wash, it remained impressively fresh—a stark contrast to fully synthetic layers, which often pick up odor after just a single day. For comparison, a polyester option like the Patagonia Capilene Midweight usually starts to smell almost immediately. The Aspect’s merino-heavy blend excels at keeping odors at bay, making it an excellent pick for multi-day trips where laundering isn’t an option.

Select icon to view details:

Icon
Icon
Icon
Icon
Icon
Icon
Icon
Icon
Icon

Longevity

Choosing durable outdoor gear and keeping it in use for longer is one of the best ways to reduce environmental impact. Our proprietary longevity rating assesses factors like overall build quality, materials, fabric denier, component durability, and real-world performance. A green check indicates that we expect the product to be long-lasting relative to its peers, a yellow check mark indicates average longevity, and a red X indicates a product that may have a limited lifespan.

Tester: 6’1” 160 lb.; 38 ¼’ chest; 31” waist

Size tested: Men’s large

The Ridge Merino Aspect fit me very well. I went with my standard men’s large: It was long enough to tuck securely into my lower layers and struck a great balance between snug and relaxed. The sleeve length was spot-on, and the thumb loops were comfortable and functional for my arm length. Overall, the fit felt thoughtfully designed for both mobility and all-day wear.

REI Co-op Merino 185 ($80): Similar Warmth in an All-Merino Build
If you’ve landed on the Ridge Merino Aspect for its lower-than-average price, it’s also worth looking at the REI Merino 185. The Merino 185 offers an ever-so-slight boost in warmth and retails for just $5 more. Unlike the Aspect, it features a 100% merino build, which has its pros and cons. Some folks love the all-natural material, but it’s more likely to develop holes and is a bit slower to dry out than the Aspect. Perceptive users will also notice that the REI Merino 185 is slightly scratchier, although we can only perceive this with a close side-by-side comparison of the two. All told, we give the edge to the Aspect. For more, check out our review of the Merino 185.


Ortovox 185 Rock’N’Wool ($120): Premium & Fun Merino
To appreciate the Aspect’s low price point, it helps to compare it to the Ortovox 185 Rock’N’Wool. For $40 more, the Rock’N’Wool offers only a slight bump in warmth thanks to its 185-gram weight (vs. the Aspect’s 180g) and 100% merino construction (remember, the Aspect blends in 16% nylon). Both use fine merino—Ortovox at 19 microns and Ridge Merino at 18.5—meaning they’re delightfully soft and not scratchy against the skin. What the extra investment really gets you is style: The Rock’N’Wool comes in blocked and striped colorways, plus a new printed version that retails for $130. You can save with the Aspect if you keep your base layer hidden, but we won’t blame you if you spend up for something a little more fun. To learn more, read our Ortovox 185 Rock'N'Wool review.

Ridge Merino Aspect ($80)
Layering over Ridge Merino Aspect Midweight Merino Wool Base Layer LS
4.7/5

The Aspect is a high-quality merino base layer that’s more affordable than much of the competition. Well-designed thumb loops and a drop hem contribute to a classy vibe, and the addition of nylon helps with durability, structure, and dry time. However, inventory can be spotty.

Fabric(s)
84% merino, 16% nylon
Fabric weight
180 g/m²
Weight
8.3 oz.
Variations
Quarter zip, turtleneck (w), hoody (m)
Icon

Warmth

3.5/5
Icon

Breathability

3/5
Icon

Durability

3.5/5
Icon

Comfort

4.5/5
Icon

Odor Resistance

4.5/5
Icon

Sustainability

2/5
REI Co-op Merino 185 ($80)
Woman packing car in REI Co-op Merino 185 LS Base Layer Top
4/5

The Merino 185 is REI’s 100% merino base layer. The 185-gram weight is a nice middle ground between light and heavyweight alternatives. However, it’s not as soft as we’d prefer and won’t hold up to heavy use as well as merino-nylon blends.

Fabric(s)
100% merino wool
Fabric weight
185 g/m²
Weight
8.2 oz.
Variations
Half-zip
Icon

Warmth

3.5/5
Icon

Breathability

3/5
Icon

Durability

2/5
Icon

Comfort

3.5/5
Icon

Odor Resistance

5/5
Icon

Sustainability

5/5
Ortovox 185 Rock'N'Wool ($120)
Man packing backpack in Ortovox 185 Rock'N'Wool Long Sleeve Base Layer
4.2/5

The Rock'N'Wool is an all-merino base layer with a very playful style. The finely woven merino is very soft, provides exceptional warmth, and effectively resists odor build-up—but will need to be babied.

Fabric(s)
100% merino wool
Fabric weight
185 g/m²
Weight
6.7 oz.
Variations
None
Icon

Warmth

3.5/5
Icon

Breathability

3/5
Icon

Durability

2/5
Icon

Comfort

4.5/5
Icon

Odor Resistance

5/5
Icon

Sustainability

3.9/5

Is the Aspect for You?

The Ridge Merino Aspect Midweight is ideal for those who want the natural performance of merino—warmth, coziness, and odor resistance—but don’t want to spend top dollar. At $80, it’s one of the best values in the base layer category.


Go for it if you want a merino base layer with versatile, all-season warmth for resort skiing, touring, or multi-day trips.


Pass on it if you need maximum durability for standalone wear or the breathability of a synthetic for high-output activities.

enter the white room

Skiing Gear Guides

Ski Kit Mash Up

curated for you

Better Trail Ski Kits

Picking up skiing for the first time or looking for gear to match your specific style? We've got a kit for that. Check out our curated ski kits for every type of skier, from beginner or budget-oriented to expert freerider, backcountry, and more. All there's left for you to do is grab your ski pass (or skins) and hit the slopes.