For those of you who haven't been watching the textile market, you may be surprised to learn Merino wool prices have been on an absolute tear since 2024, reaching an insane peak just last month before cooling off just slightly. The reason for this rise is directly tied to consumer demand.
With more and more research coming out about the health impacts of synthetic fibers, consumers have been searching for natural alternatives. Wool, as one of the oldest and most sustainable fibers in existence, has become the darling of the eco-friendly consumer. I am not ashamed to say I, too, have jumped on the wool underwear bandwagon, and I do not regret it.
The only challenge is we have a shortage of Merino wool sheep. Only a few years ago, wool was so cheap, farmers decided they could earn more money selling the meat than harvesting the wool. Now, as consumers are turning away from full synthetic clothing, demand for wool has jumped.
If you're shopping for sweaters, knitwear, or premium outerwear, Merino wool is one of the first fibers I recommend seeking out. While no single textile is perfect for every application, Merino consistently offers one of the best combinations of comfort, performance, and longevity available today.
Read on for more about Merino wool, and keep an eye out for a few tricks I have learned when caring for a natural fibers.
Why should I care?
If you want to start investing in fewer, better pieces, understanding Merino wool is one of the most valuable things you can learn.
What Is Merino Wool?
Merino wool is a natural fiber shorn from Merino sheep, a breed originally developed in Spain and now raised throughout the world. Australia is the largest producer of fine Merino wool, followed by New Zealand and South Africa.
Unlike ordinary wool, Merino fibers are exceptionally fine. That difference in fiber diameter may sound like a technical detail, but it has an enormous impact on how a finished garment feels.
The finer the fiber, the softer and more flexible it becomes.
That is why Merino wool can feel almost silky, while coarser wool often feels rough or prickly.
Why should I care?
Because softness isn't just about comfort—it's about whether you'll actually enjoy wearing the garment.
We've all owned clothing that looked beautiful but sat untouched because it never felt quite right. A luxurious coat or sweater should be something you look forward to putting on.
Merino wool helps make that possible.
Why Is Merino Wool Softer Than Regular Wool?
The softness of wool is measured by the diameter of each individual fiber.
These measurements are incredibly small and are expressed in microns, or one-millionth of a meter.
Traditional apparel wool often measures between 25 and 35 microns.
Fine Merino wool typically falls between 17 and 24 microns, with the highest grades becoming even finer.
Although those numbers seem insignificant, your skin notices the difference immediately.
Coarser fibers are stiffer, so they press against the skin and create the scratchy sensation many people associate with wool.
Fine Merino fibers bend instead of poking, creating a fabric that feels remarkably smooth.
Why should I care? Think price vs. quality.
Because this is one of the easiest ways to understand why two wool garments with similar price tags can feel completely different.
Not all wool is premium wool.
Understanding that fiber fineness matters will help you recognize why certain garments command higher prices, and why they often provide a much better wearing experience.
Merino Wool Keeps You Warm Without Feeling Heavy
One of the reasons wool has remained popular for centuries is its remarkable ability to insulate. Each Merino fiber contains a natural crimp that creates tiny pockets of air throughout the fabric.
Those pockets trap warmth close to your body while still allowing excess heat to escape. The result is insulation that feels warm without feeling bulky.
Unlike many synthetic materials, Merino doesn't simply trap heat. It helps regulate your body temperature.
Why should I care? Think comfort.
Think about the last time you wore a heavy winter coat into a grocery store. Within minutes you probably felt overheated.
Good natural fibers help you stay comfortable as your environment changes, which means less overheating indoors and less shivering when you step back outside.
Merino Wool Is Surprisingly Breathable
One of the biggest misconceptions about wool is that it is only useful in cold weather. In reality, Merino wool performs well across an impressive range of temperatures. The fibers naturally absorb moisture vapor before releasing it into the air. That process helps regulate both humidity and temperature inside the garment.
It is one of the reasons hikers, travelers, and mountaineers have trusted Merino wool for decades.
Elise's Trick: As I mentioned in the intro, I recently discovered merino wool underwear, and it changed my life. I highly recommend doing your research into wool underwear options. This is not the wool underwear you remember from Little House on the Prairie. It has been brought into the 21st century, and I think we need to take note!
Why should I care? Think versatility.
Because clothing that breathes is simply more comfortable to wear.
Whether you're commuting to work, walking through an airport, or spending a full day outdoors, breathable fabrics help you stay comfortable instead of feeling clammy or overheated.
Comfort is one of those qualities you rarely notice when it's present, and immediately notice when it's missing.
Does Merino Wool Itch?
This question comes up almost every time someone considers buying their first Merino garment. The answer is generally no.
Merino wool earned its reputation precisely because it challenged the old stereotype that all wool is scratchy.
Its fine fibers bend easily against the skin, making them dramatically more comfortable than traditional wool for most people.
Of course, everyone's skin is different. Someone with extremely sensitive skin may still prefer a lightweight layer underneath certain garments.
Elise's Trick: I wear a cotton t-shirt under most of my wool sweaters. For two reasons: 1) the cotton layer adds warmth during the winter, and 2) the cotton shirts are much easier to wash, and they act as a buffer between my body and the sweater.
But for most people, quality Merino wool feels soft enough to wear directly against the body.
Why should I care? Think innovation.
Because many shoppers eliminate wool from consideration based on experiences they had decades ago. If that's you, it may be worth giving Merino another chance.
It isn't the wool you probably remember.
Merino Wool Is Naturally Odor Resistant
Unlike many synthetic fibers, Merino wool doesn't readily trap odor-causing bacteria, meaning it will remain fresher between washes.
Elise's Trick: I hang my Merino wool sweaters overnight in a room with good airflow in between washes. The airing out of the wool naturally freshens up the fibers and reduces laundering, which saves me time (something I am always looking for!)
This characteristic has made Merino especially popular in travel clothing and outdoor apparel, where packing fewer pieces is a significant advantage.
Why should I care? Think of the time savings.
Laundering is one of the best ways to reduce the longevity of a clothing item, which I know is counter-intuitive. We all have to wash our clothing at some point.
However, because Merino wool is naturally odor-resistant, you can go longer between washes, which lengthens the item's lifespan and protects your wardrobe investment.
Merino Wool Is Built to Last
Luxury clothing must consider longevity as well as appearance. Properly cared for, a high-quality Merino garment can remain beautiful for many years.
The fibers naturally recover well after being compressed, resist wrinkling better than many fabrics, and continue performing season after season.
Why should I care? Think investment.
One beautifully made sweater that lasts ten years is often a better purchase than five inexpensive sweaters that need replacing every other season. Merino wool is an eco-friendly fiber you will not regret investing in.
Merino Wool vs. Traditional Wool
| Feature | Merino Wool | Traditional Wool |
|---|---|---|
| Softness | Excellent | Moderate |
| Warmth | Excellent | Excellent |
| Breathability | Excellent | Good |
| Comfort Against Skin | Excellent | Variable |
| Odor Resistance | Excellent | Good |
| Typical Uses | Luxury clothing, knitwear, outerwear | Blankets, coats, upholstery, workwear |
Merino wool has earned its reputation not because it is fashionable (although it is), but because it solves problems. It is softer than traditional wool, and breathes better than synthetic fabrics.
Because we know Martindale clients are interested in investing in a high-quality wardrobe, we highly recommend seeking out Merino wool for your winter staples. And don't be afraid to try the new merino wool undergarments and workout gear popping up everywhere. There is a reason it is gaining ground!
Until next time,
Elise
P.S. If you like merino wool, you will love our Australian wool coats.
