In brief
- Merino wool stands out for its fineness: according to Woolmark, the fibre diameter ranges from less than 17.5 microns to about 22 to 24 microns, compared to 25 microns and above for common wools.
- This fineness explains the absence of prickling. The scratching sensation comes from the fibre's diameter, not the wool itself.
- The fibre is hygroscopic: it absorbs moisture deep inside and remains dry to the touch, making it comfortable both indoors and outdoors.
- A merino wool jumper can be machine-washed on a wool program at less than 30 °C, with a spin speed below 700 rpm and flat drying.
- At Cabane, merino garments are knitted and manufactured in Roanne, tested for over a year before going on sale, and industrially pre-washed.
A scratchy jumper doesn't get worn. It stays folded, moves from one shelf to another, and eventually gets given away. The difference between one wool and another often lies there, long before questions of cut or colour. If merino wool holds such a prominent place in men's wardrobes, it's for a measurable reason: the fineness of its fibre. The rest—warmth, breathability, durability—largely stems from this.
Fineness, the only true explanation
Not all wools are equal, and the difference is not in the narrative but in the micron. According to Woolmark, the diameter of a merino wool fibre generally ranges between less than 17.5 microns and 22 to 24 microns. A common sheep's wool often exceeds 25 microns. This difference seems tiny. It is not.
The finer a fibre is, the more it bends when it touches the skin instead of pressing against it. Woolmark states it clearly: the prickling sensation comes from coarse micron fibres, regardless of the fibre in question. In other words, it's not the wool that scratches. It's the diameter.
Hence the term "extrafine," which refers to the finest yarns in this family. It's not just decorative. An extrafine merino knitted in a fine gauge can be worn directly against the skin, which a classic carded wool does not allow.
What the fibre does once knitted
Merino fibre is crimped. This natural waviness creates micro air pockets within the knit, and it is this air, not the fibre itself, that insulates. Therefore, a merino jumper warms without feeling heavy.
A second, less visible property: the fibre is hygroscopic. It absorbs moisture deep within rather than on the surface and can retain nearly a third of its weight before feeling wet. In practical terms, on a normal day, you enter an overheated building, you sweat a little, and the jumper doesn't become damp. This same property explains why merino wool retains odours less than synthetic materials.
One point that is systematically overlooked remains. The fibre returns to its shape. A stretched wool yarn regains its length, which limits stretched elbows and sagging collars after two seasons. Wool fibre consists of approximately 97% protein and is biodegradable at the end of its life. This is not an argument; it is a material fact.
Imported merino, French merino
We say merino wool as we would simply say wool, while the term covers a sheep breed raised on several continents. Most of the world's volume comes from the Southern Hemisphere. France has its own lineage, the Arles merino, born in the 19th century in the Crau plain, whose fineness averages around 21 microns.
We source our yarns primarily from Italian spinning mills for a simple reason: consistency. An irregular yarn results in an irregular knit, and this becomes visible after ten washes, not the first. Arles merino is gradually entering our collections. The composition is indicated model by model, without generalization.
Weights and uses: which merino for which moment
One material is not enough. The weight and gauge determine the actual use, and this is where most purchases go wrong. Choosing a men's merino wool jumper therefore means choosing a time of day before choosing a colour.
Fine knit, extrafine merino. The office, travel, or long-day jumper. It fits under a jacket without adding bulk, can be worn alone indoors, and folds without creasing. The fine V-neck merino wool falls into this category.
Full knit, 100% merino. More material, more trapped air, therefore more warmth. This is the winter jumper, worn alone or under a coat. Our merino wool crew neck jumpers cover both registers, from fine to dense.
Merino and organic cotton blends. Less obvious, often the most suitable for mid-season. Cotton tempers the warmth of merino and adds structure to the knit. Useful in April, useful in October, useful in an air-conditioned office.
The collar matters as much as the weight. A fine crew neck layers easily. A V-neck opens up the neck and works with a shirt. A zip-neck collar eliminates the need for a scarf for half the winter.
What we check before launching a yarn
A merino yarn can feel soft in hand and be disappointing in use. Time is the only judge.
Each model is tested for over a year before going on sale. Not just a control wash: actual wear with accompanying washes. A yarn that loses its fullness, pills excessively, or deforms at the seams does not remain in the collection.
Our productions are industrially pre-washed. This step stabilizes the knit and allows for machine washing on a wool program without unpleasant shrinkage surprises. It's an additional production constraint, and it solves the most common problem with wool jumpers.
Knitting and manufacturing are done in Roanne, in specialized workshops. Seeing the knit come off the machine, correcting tension, redoing a collar: this proximity primarily serves this purpose.
Caring for a merino wool jumper
Caring for a merino wool jumper comes down to four points. Machine washing is allowed, provided it is set correctly:
- Wool program, temperature below 30 °C. Above this, the fibre shrinks.
- Spin speed below 700 rpm. Violent spinning breaks fibres and creates pilling.
- Dry flat, ideally on a towel. No tumble dryer, no direct sunlight.
- Gentle ironing inside out. Steam restores fullness and shine to the knit.
Pilling is not a quality defect. It appears in friction areas, and a fabric shaver removes it cleanly. Out of season, store jumpers in covers: moths prefer natural knits.
One last, largely underestimated point. Most merino jumpers are washed too often. A night of airing is sufficient in most cases. Full details can be found in our washing best practices.
What merino wool doesn't do
Nothing is perfect. A fine knit is less resistant to abrasion than a coarser wool: a bag always carried on the same shoulder will eventually leave its mark. The price is higher because the fine raw material is scarcer and sorting at the spinning mill is more demanding. And even pre-washed, a merino jumper requires a minimum of attention when washing.
These constraints are paid for once. The jumper, however, lasts for years.
Conclusion
Merino wool is not the queen of jumper materials by convention. It is because it simultaneously solves three problems that other fibres address separately: comfort against the skin, thermal regulation, and long-term durability. The rest depends on the yarn chosen, the weight, and how the garment is knitted. This is where the difference lies between a decent jumper and one you will wear for ten years.
Frequently Asked Questions
Does merino wool scratch?
No, not in the finenesses used for dress knitwear. Prickling is caused by fibres with a coarse diameter, generally above 25 microns. Merino is below this threshold, and extrafine merino significantly below.
Can a merino wool jumper be machine washed?
Yes, on a wool program, at less than 30 °C, with a spin speed below 700 rpm, and flat drying. Since our productions are industrially pre-washed, the knit is stabilized before first use.
Merino wool or cashmere?
Cashmere is softer and lighter for the same warmth. Merino holds up better over time, is more resistant to friction, and is easier to wash. For a jumper worn weekly, merino is often the more rational choice. Some garments combine both fibres to merge their behaviours.
Why does a merino wool jumper cost more?
Fine wool represents a limited portion of global wool production, sorting at the spinning mill is more selective, and fine gauge knitting requires more machine time. Added to this, for us, is manufacturing in Roanne and a testing phase of over a year before commercialization.
What is the difference between merino wool and Arles merino?
Merino wool refers to wool from the merino sheep breed, raised in several countries. Arles merino is a French lineage, born in the 19th century in the Crau plain, with an average fineness of around 21 microns. So, a merino wool label does not mean French origin.