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Meriwool Merino Thermal Pants - Women's Review

A merino wool pant that offers an excellent value
Best Buy Award
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Price:  $60 List | $59.99 at Amazon
Pros:  Excellent value, very warm, breathable, cute color options, comfortable waistband, versatile fit
Cons:  Stretches out over time
Manufacturer:   Meriwool
By Amber King ⋅ Senior Review Editor  ⋅  Nov 17, 2020
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74
OVERALL
SCORE


RANKED
#7 of 10
  • Warmth - 30% 9
  • Breathability - 30% 7
  • Comfort and Fit - 30% 7
  • Durability - 10% 5

Our Verdict

If you're seeking a deal on a merino wool pant, the Meriwool Merino Thermal Pant for women is our top recommendation. Built with 250 g/m² of 100% merino wool, this pant provides a wide range of thermoregulation. We tested it while hiking, running, and exploring our backyard well into the single digits. The soft and cozy fibers offer superior wicking properties, warmth, and breathability. It's sufficient to wear as your next to skin layer during the coldest days of winter in a layered system. Unfortunately, for us, it stretches out over time. However, we still think it's the best deal for a full merino wool base layer pant.

Compare to Similar Products

Our Analysis and Test Results

If you're seeking a stellar deal, the Meriwool Merino Pants for women are a 250 g/m² 100% merino wool option you should consider. Designed with a comfortable and stretchy fit, this pant will fight to keep your body dry in cold temperatures. Wear it through cool to cold weather under a pair of snow pants or on its own. For the price, you'll be hard-pressed to find a better deal.

Performance Comparison


This 100% merino wool pant is a great deal. Wear it under a skirt or pair of pants for excellent warmth during cold weather. Just know that it will stretch out.
This 100% merino wool pant is a great deal. Wear it under a skirt or pair of pants for excellent warmth during cold weather. Just know that it will stretch out.

Warmth


Loaded with 250 g/m² of 100% merino wool, this midweight thermal pant is warm and thick enough to be easily worn with a pair of uninsulated or insulated pants. We tested it into single-digit temperatures as a layered system and on its own. Through all circumstances, it kept us as warm as other options with the same fabric and weight.


Our lead tester discusses animal adaptations in our local forest school when temperatures are below 10 degrees F. Under her pants are the Meriwool Merino Thermals that kept her warm during this 7-hour stint in cold weather.
Our lead tester discusses animal adaptations in our local forest school when temperatures are below 10 degrees F. Under her pants are the Meriwool Merino Thermals that kept her warm during this 7-hour stint in cold weather.

We tested this pant while teaching all-day outdoors for three weeks during the late Fall to early Winter in Southwest Colorado. We wore them under varying outer layers through temperatures ranging from 0 to 65 degrees Fahrenheit. In all conditions, it did an excellent job moving moisture from the skin to keep us dry, keeping us warm in frigid conditions.

We test the warmth of this pant while taking a wintery hike as the sun goes down in Ridgway  CO.
We test the warmth of this pant while taking a wintery hike as the sun goes down in Ridgway, CO.

We also wore it under a skirt while hiking and running in windy conditions during a mid-Fall weekend in Ouray, Colorado. As we hit 13,000 feet, the wind started to blow. The material weave of this fabric offered some wind resistance, keeping our skin toasty, even when worn on its own. The weave isn't super tight, but the fabric thickness is ample.

The materials are thick and offer great protection from the wind. The warmth is comparable to our high performers  generating lots of heat while ventilating well.
The materials are thick and offer great protection from the wind. The warmth is comparable to our high performers, generating lots of heat while ventilating well.

If you're planning on hitting the resort this winter or you're thinking of a winter camping expedition, this thicker base layer will provide much ample warmth when layered appropriately with snow pants. For active sports, it's also a good choice, but only when the temperatures are pretty cold and upper layers have appropriate ventilation. This is a warm base layer. Plus, if it gets wet, it still insulates due to the inherent properties of merino wool.

Breathability


The thickness of this pant is about average, with a medium to tight fabric weave. While this pant is protective and warm from cutting winds (on its own), it still provides great breathability.


When holding the pant up to the light, you can see the little holes in the fabric that offers great airflow. When worn on its own or with a well-ventilated pant, you'll feel nice and dry. While it's breathable, it's not the most breathable option on the market, given that the fabrics are thicker than the lighter weight options we've tested.

Holding these bottoms up to the light gives us insight into its weave pattern and permeability.
Holding these bottoms up to the light gives us insight into its weave pattern and permeability.

We tested this pant while wearing it on its own and in a layered system. We hiked with it underneath a fleece-lined soft pant and on its own on mountain ridges. In both conditions, when temperatures went about freezing and into the 50's F, we still felt dry. Warm, yes - but not sweating out. We ran with this pant in 60 - 70F weather for distances ranging from 5 miles to 15 miles. While we got hot and sweated, the fabric still moved moisture and kept our skin dry. Overall, this pant is breathable and offers a wide range of thermoregulation - similar to any pant made from 100% merino wool. However, it does heat up faster than other lighter contenders with a thinner construction.

We enjoy running and hiking on ridges in these pants! The temps were warm while we hiked up and cooled on this 13 000 ft in Ouray  CO. This pant proves to insulate and breathe well.
We enjoy running and hiking on ridges in these pants! The temps were warm while we hiked up and cooled on this 13,000 ft in Ouray, CO. This pant proves to insulate and breathe well.

Comfort and Fit


This pant is super cozy and comfortable on the skin. Since it has a 100% merino wool construction, there is no itch, and ready for all-day wear. It also doesn't stink if you can't wash it for a few days. The only caveat—it stretches out over time in our experience.


The fit of this pant is versatile, fitting bodies of different shapes and sizes. The waistband is very stretchy with inches of giving, making it a good choice for most women. The fabrics are also quite stretchy, which at first feels great. The fit is also true to fit at first but stretches to be a bit larger. As a result, if you like a super tight fit, we'd even recommend sizing down if you're on the fence between sizes.

The waistband is elasticized and comfortable against the skin. The materials are soft and ready for all-day wear. This pant has a stretchy fit and unfortunately does not 'bounce back' even after a wash.
The waistband is elasticized and comfortable against the skin. The materials are soft and ready for all-day wear. This pant has a stretchy fit and unfortunately does not 'bounce back' even after a wash.

On a hike-run adventure, we noticed after just a half-hour of activity that the fabrics began to stretch out. The fabric no longer sat tightly against our skin and sagged around the glutes and knees. We found ourselves constantly pulling them up and adjusting them to get a better fit. On this particular adventure, we were wearing them on their own under a skirt. We also experienced this on a day of work at an Outdoor School. Our lead tester found herself constantly pulling the pant up under her softshell pants.

A look at the fit after we pulled it up. Our tester is 5'6  145 lbs wearing a size medium. This size felt a bit big for her athletic build  especially after stretching out.
A look at the fit after we pulled it up. Our tester is 5'6, 145 lbs wearing a size medium. This size felt a bit big for her athletic build, especially after stretching out.
A look at the fit from the back.
A look at the fit from the back.

While the pants are comfortable to wear all day and don't smell, even after not being washed for a week, they will eventually stretch out. Even after putting them into the dryer, the material did not return to its original state that we had out of the packaging. As a result, this isn't our first choice to wear on its own, simply because it looks stretched out. However, it still performs and does the work it needs to under a pair of pants.

The fit from the side.
The fit from the side.

Durability


This pant proves to have lackluster durability because it stretched out during our testing period. After just three weeks, its shape is completely different. We also washed it several times and noticed some pilling after the first wash. However, we still don't see any serious holes or tears, even after some serious abuse directly to the face fabric. So, this pair doesn't overwhelm us in this metric, but it passes our basic tests.


We wore this pant constantly over our testing period, both on its own and under a pair of pants. We took it into the bush, bushwacked, and even scraped the material across rocks while scrambling around on hiking missions. The only real signs of wear and tear after all this is stretching out and some pilling. Our experience with merino wool is it needs to be taken care of, with uses avoiding sharp or friction-y surfaces. This would be our recommendation for your use as well. So far, though, this pant seems to be holding up after our tests. We think this is in part to its thicker fabrics. If you seek a more durable construction, be sure to check out options made from synthetic materials, which typically feature more durable fibers.

Value


You'll be hard-pressed to find a better deal on a pair of super warm merino wool long john pants. While this pant stretches out in our experience, it has the same range of thermoregulation and warmth as our top contenders at a fraction of the price. Our conclusion is that the value is exceptional and should be considered, especially if you're on a tight budget.

Conclusion


The Meriwool Merino Thermal Pant is a midweight 100% merino base layer pant with excellent value. While it eventually stretches out with use, you can still enjoy the cute colors and excellent performance at a wonderful price. This is our top recommendation for those seeking a great deal on a thicker merino wool base layer sufficient for cool to cold days.

We enjoy this long underwear bottom for biking  hiking  and running. We also will wear it through the winter as our next to skin choice while skiing at the resort. It presents an unbeatable value with a few caveats.
We enjoy this long underwear bottom for biking, hiking, and running. We also will wear it through the winter as our next to skin choice while skiing at the resort. It presents an unbeatable value with a few caveats.

Amber King