Merino Wool Base Layers Made in Europe

Eight Brands and What Their Labels Actually Say

Reading time: 16 minutes

• What a merino wool base layer actually has to do
• What we checked before recommending anything
• Sweden and Finland: knitted and sewn in the north
• Germany: wool underwear from the Swabian Alb and Saxony
• Merino against the skin every day, not only on the mountain
• Janus, and the gap between knitted in and made in
• Which merino wool base layer to choose
• About CollectionEU
• What to take away
• Frequently asked questions

The short version:

• Five of the eight brands here knit, cut and sew their base layers in their own country.
• Almost nobody spins the yarn there. Fibre travels, and assembly is what a made-in claim covers.
• Finland is the surprise of this selection, with three brands producing at real scale.
• Two brands are precise about doing only part of the work at home. That precision is worth something.
• A European-made long-sleeve costs between roughly 63 and 110 euros.

There is a specific moment, somewhere around the second hour of a cold morning, when you find out whether your first layer was chosen well. Cotton has gone damp and stayed damp. A synthetic has moved the sweat but started to smell. Good merino does neither, and you stop thinking about it entirely, which is the point. The trouble is that the merino wool base layer market is dominated by brands that design in Europe and produce a long way from it, and the label rarely helps. This selection looks at eight brands from our directory, and at what each can prove about where the garment was assembled.

A merino wool base layer is the garment worn directly against the skin, knitted from merino fibre fine enough not to prickle, usually under 19.5 microns. It regulates temperature by trapping air and absorbing moisture vapour, up to 35 per cent of its own weight before it feels wet, and resists odour without chemical treatment.

What a merino wool base layer actually has to do

Fineness first. Merino wool is generally under 22 microns, and The Woolmark Company's technical overview of the merino fibre puts the next-to-skin threshold at roughly 19.5. Below that, the fibre bends rather than resists when it meets skin. The prickle you remember from childhood jumpers is not an allergy: it comes from individual fibre ends thick enough, around 30 microns, to stay rigid under pressure and trigger pain receptors. Woolmark's next-to-skin certification asks for 99 per cent of fibres below that mark. Micron count is not marketing trivia. It is the number that decides whether you will actually wear the thing.

Then moisture. Wool absorbs up to 35 per cent of its weight in vapour before it feels wet, and moves roughly thirty times as much of it as polyester. It is also doing something quietly thermodynamic: as it takes on moisture it gives off heat, enough that a kilogram of dry wool releases about as much warmth as an electric blanket running for eight hours. That is why a wool layer holds up through the stop-start rhythm of a real day.

Odour is the part people notice most and understand least. Wool is not antibacterial, whatever you may have read. Sulphur-rich proteins deep inside the fibre capture odour-causing molecules and hold them until the garment is washed, and in blind assessment wool fabrics held 66 per cent less body odour intensity than polyester. The International Wool Textile Organisation's account of wool's odour resistance sets out the mechanism without embellishment. The consequence is fewer washes, which is most of the reason a wool base layer outlives a synthetic one.

One myth to put down. Wool underwear is occasionally sold on its lanolin content, as though the grease survived into the garment. It does not. Scouring exists precisely to strip lanolin out, and residual grease on scoured wool is a contaminant with a maximum permitted level, not a feature.

What we checked before recommending anything

Every brand below states on its own site where its garments are made. That sounds like a low bar. It is not: it eliminated one of the nine brands we started with, and it forced honest qualifications on two more. The grid we applied:

• Assembly location must be named explicitly by the brand, not implied by a flag or a font.
• Fibre composition must be published per product, not summarised as a merino blend.
• Micron count, where stated, must come from the brand rather than a retailer listing.
• Mulesing-free claims must be backed by certification or by verifiable sourcing geography.
• Fabric weight in grams per square metre must appear on the product page itself.
• Prices must come from the brand's own webshop, never from a marketplace.
• Any step performed outside the country of origin must be stated by us, plainly.

That last point deserves a sentence. Almost nobody in this category spins their own yarn. Woolpower has its wool scoured and dyed in Germany and spun in Romania before it reaches Sweden. Kaipara's fabric is woven in northern Italy and cut and sewn in Saxony. Svala buys yarn from Italy, Germany and Switzerland. Ruskovilla's organic merino arrives in Finland as yarn from German and Italian suppliers. None of this is a failure. A made-in claim in textiles conventionally covers the last substantial transformation, and every brand here is open about the rest. For the general method, see our guide to identifying fashion made locally in Europe.

Two labels deserve a warning. Virgin wool, Schurwolle in German, is a legal term under EU textile labelling rules meaning one thing: the wool has never been used in a finished product before. It says nothing about fineness or quality, though it is often presented as though it does. And the 150, 200, 260 numbers on base layer labels are a brand convention, not a standard. Two garments at 200 grams per square metre can behave very differently depending on knit structure.

Sweden and Finland: knitted and sewn in the north

Woolpower, Östersund, Sweden

Woolpower is the most vertically integrated operation in this selection. Knitting, fabric preparation, cutting, sewing and packing all happen in one factory in Östersund, in Jämtland, and the company says so flatly: they produce all their products in Sweden. Ullfrotté Original, the signature material, is a terry knit with loops on the inside that trap a large volume of air, which is why a 200 gram Woolpower feels warmer than its weight suggests. Composition is 60 per cent merino at 22 microns with polyester, polyamide and elastane. Purists will note this is not pure wool, and Woolpower does not pretend otherwise: the synthetics are there for abrasion resistance and recovery. The lighter LITE line goes to 80 per cent merino and swaps the loops for a rib knit. Bodies are circular knitted, so no side seams. And a detail I find hard to forget: the seamstress inspects the finished garment and signs it with her own name on the label. 

Svala, Kärsämäki, Finland

Svala of Finland has been making wool underwear since 1955, and the design, knitting, finishing, cutting and stitching of its merino range are carried out in Finland, at a factory in Kärsämäki in Northern Ostrobothnia. The brand is careful with its own numbers: about 80 per cent of its knits are knitted in Finland and the rest elsewhere in Europe, with named exceptions, including one mesh knitted in the United Kingdom. This is the most technical wardrobe here. The Merino Extreme zip-neck is a two-layer construction, 75 per cent mulesing-free merino on the outer face over an inner polypropylene layer that pushes moisture off the skin, at 200 grams per square metre, flatlock seams throughout. There are long johns, thermal trousers and a full merino jumpsuit, which tells you who this is built for: people working outdoors through a Finnish winter, not commuting through one.

Ruskovilla, Artjärvi, Finland

Since 1981, and since 1991 from an old dairy building in Artjärvi where around twenty seamstresses work. Ruskovilla has never outsourced its sewing. Yarn arrives from Germany and Italy, is knitted by a long-term partner in Orivesi, and is made up in Artjärvi. The merino is certified organic and 18.5 microns, the finest figure published by any brand here, in a 210 gram interlock knit. Nothing is finished with softeners or resins, and the brand notes its garments need no washing before first wear. Where Ruskovilla goes furthest is the silk blend: 70 per cent organic merino with 30 per cent silk, noticeably cooler on first contact and far less dense than its weight implies. Natural white silk wool is left undyed. Worth reading alongside the other brands made in Finland.

Germany: wool underwear from the Swabian Alb and Saxony

Engel Natur, Pfullingen

Engel Natur has been a family business since 1930 and makes a claim almost nobody else in European textiles can: 100 per cent of its clothing is produced in Germany, most of it in its own factory in Pfullingen on the edge of the Swabian Alb, the rest with partner workshops within fifty kilometres. There is a factory shop, as they put it, literally on the other side of the wall from production. The wool is fine new merino from certified organic animal husbandry, from sheep in Patagonia, and the mulesing argument here is geographical rather than contractual: the blowflies that mulesing is meant to prevent do not live there. Around 95 per cent of the range carries GOTS or IVN BEST certification, IVN BEST being the stricter of the two. The wool and silk pieces, 70 per cent virgin wool with silk and a little elastane, are the ones to know. The baby and children's range is genuinely deep, which is not true of most of the others.

Kaipara, Erzgebirge

Founded in 2011 by Frank Selter, Kaipara took the opposite decision to most of the merino sportswear market: 100 per cent merino wool, no synthetic blends anywhere in the base layer range. Product pages list Schurwolle at 150, 200 or 250 grams per square metre. The fabric is made in northern Italy, from raw wool through to cloth, by a long-established mill operating under EMAS environmental management. Garments are cut and sewn in a small workshop near the Erzgebirge, in Saxony, and the brand describes every step from cutting to the last seam happening in Germany. The wool is ZQ-Merino certified, which covers mulesing and animal welfare on the farm side. There is also an URBAN line cut to be worn as a shirt rather than under one. If you want pure wool against your skin and nothing else in the yarn, this is the one.

Merino against the skin every day, not only on the mountain

Most people buying wool next to the skin are not going into the mountains. They are cold on a platform, then too warm in an office, then cold again. That case is served better by a merino t-shirt than by a technical thermal, and two brands here are honest about which category they are in.

Meedin, Netherlands

Meedin makes merino t-shirts and sweaters, fully manufactured in the Netherlands, and the construction is the interesting part. Each piece is knitted seamlessly in one piece from 100 per cent merino, so there are no side seams, no shoulder seams and no assembly in the usual sense. The garment leaves the machine as a garment, and there are effectively no offcuts. Worn against the skin, the absence of a shoulder seam is not a small thing under a bag strap. Meedin does not make thermal underwear and does not claim to. Read it as the everyday layer, and see our selection of merino wool t-shirts made in Europe for the wider picture.

North Outdoor, Oulu, Finland

North Outdoor built its own knitting mill in Oulu in 2021, and its merino knitwear, the shirts, sweaters and beanies, is made there and carries the Finnish Key Flag label. We need to be exact about the rest, because the brand’s base layer range is manufactured in China, as North Outdoor states on the product pages themselves. Their wording is that products which cannot be manufactured in Finland are produced responsibly in China, with amfori BSCI assessment behind it. So North Outdoor belongs here for its Finnish-made knitwear, not for its base layers. The wool is mulesing-free, the yarns Woolmark certified, the fabrics Oeko-Tex certified, and a 100 per cent merino knitted shirt worn against the skin is a perfectly reasonable first layer in cold, dry weather.

Janus, and the gap between knitted in and made in

Janus has been running the Espeland factory outside Bergen since 1895, and its line is precise: knitted in Norway. Not made in Norway. Around 90 per cent of its garments are knitted at Espeland, and sewing happens at a European facility wholly owned by the parent company, whose country Janus does not name on its site. Under a strict reading Janus is not fully produced in its country of origin, and we will not present it as if it were. But the wording is deliberate and accurate, which is more than can be said for a good deal of this industry, where made in Europe is stretched to cover a container from somewhere else.

The product is serious. The Classic range is 100 per cent merino at 160, 200 or 215 grams, the Norse Merino line uses a double construction with mesh inside and smooth merino outside at 400 grams, and there is a wool terry comparable to Woolpower's. Everything is Oeko-Tex Standard 100 certified, and garments are tested to survive at least twelve months of daily use including twenty washes at 60 degrees. 

The lesson generalises. When a brand writes knitted in, spun in or sewn in rather than made in, it is usually telling you something true. Vagueness is the warning sign, not specificity.

Which merino wool base layer to choose

The simplest answer: Engel Natur if price and certification matter most, Kaipara if you want nothing but wool touching you, Ruskovilla if your skin is difficult, Svala or Woolpower if you are going to be genuinely cold for hours. Buy one and wear it for a month before buying a second. Merino tells you quickly whether you and it agree. One care note, since it decides how long the garment lasts: untreated merino will felt in a normal cycle, so the 40 degree wool programme Woolmark recommends applies to shrink-resist treated wool, not to everything.

About CollectionEU

CollectionEU is a curated directory and editorial platform for brands that manufacture in their country of origin in Europe. Each listing is checked individually before it goes live, and where production is split across countries we say so rather than round it up. The Magazine covers selections, comparisons and buying guidance; the Dictionary covers materials, fibres, certifications and vocabulary. We are not a shop. We are a way of finding out who actually makes what, and where.

What to take away

The category is smaller than it looks. Strip out the brands that design in Scandinavia and produce in Asia, and a genuinely European merino wool base layer comes down to a handful of factories: one in Jämtland, two in Finland, two in Germany, a whole-garment knitter in the Netherlands, a knitting hall outside Bergen. That concentration explains prices that sit between roughly 63 and 110 euros for a long-sleeve and are unlikely to fall. What you get for it is a garment made where someone can be held responsible for it, in a fibre that will still be working in five winters. Start with the micron count and the assembly location. The rest follows.

Frequently asked questions

What micron merino should a base layer be?

Aim for 19.5 microns or finer for anything worn directly against the skin. The Woolmark Company sets that threshold for next-to-skin certification, and also requires that 99 per cent of fibres measure under 30 microns, the diameter at which a fibre end stops bending and starts pricking. Ruskovilla publishes 18.5 microns, Woolpower 22, and most brands publish nothing at all.

Is any merino wool base layer fully made in Europe?

Garment assembly, yes. Fibre, no. Merino is grown in Australia, New Zealand, South Africa and South America, so no European base layer starts with European wool. Spinning is often Italian, German, Romanian or Swiss. What Woolpower, Engel Natur and Ruskovilla can honestly claim is that the knitting, cutting and sewing happen in their own country, which is what a made-in claim covers.

Does merino wool base layer clothing contain lanolin?

No. Lanolin is the natural grease in raw fleece and it is removed during scouring, before the wool is spun. In the wool trade, residual grease on scoured wool is treated as a contaminant with a maximum permitted level, not as a benefit. Any brand selling a spun merino base layer on its lanolin content is describing something that is not in the garment.

How often should you wash a merino base layer?

Far less often than a synthetic one. Wool traps odour molecules inside the fibre rather than on its surface, so airing a garment overnight removes most of the smell. When you do wash it, use the wool programme with a mild detergent and dry it flat. The 40 degree figure applies to shrink-resist treated wool; untreated merino needs a cooler, gentler cycle.

What is the difference between merino wool and virgin wool?

They answer different questions. Merino describes the sheep breed, and therefore the fineness of the fibre. Virgin wool, Schurwolle or laine vierge, is a legal term under EU textile labelling rules meaning wool never used in a finished product before. A garment can be virgin wool without being merino, and coarse virgin wool will still prickle.