Where the Wool Comes From

We like to know where our gear comes from. It's a simple rule, and it's served us well.

If you're paying for clothing made from natural fibre, you ought to know how that fibre got to you and how it was produced.

Good Wool Starts on the Farm

Good wool comes from healthy sheep, looked after properly. Everything else follows from that.

Icebreaker's wool sourcing standards cover animal welfare, flock management and land stewardship. They also prohibit mulesing, a surgical procedure sometimes used to reduce the risk of flystrike.

Icebreaker's wool is also ZQ certified, which brings independent auditing and standards for how sheep are treated and managed.

Let's be straight about it: farming always involves hard choices and real impacts, and no certification makes every question go away. But documented standards, traceability and responsible husbandry are where better wool begins. Better wool makes better clothing.

What Does "200 Oasis" Mean?

The 200 is the fabric weight: roughly 200 grams per square metre. That makes it a midweight merino jersey, warm enough to earn its keep in the cold and light enough to wear under your everyday kit without feeling like armour.

For British weather, that's about right. You don't need expedition thermals for a November walk, a frosty commute or a winter weekend in the country. You need a layer you can rely on that works with everything else you're wearing. The 200 Oasis does the job.

Three Pieces Worth Owning

These three make up the foundation of a practical winter layering system.

Icebreaker Men's Merino 200 Oasis Long Sleeve Crewe

This is the one to start with. It's 100% merino wool, with a plain crew neck that sits under nearly anything. The slim fit keeps bulk down. Flatlock seams and offset shoulder seams eliminates rubbing under other layers, gusseted underarms let you move, and the slightly longer rear hem keeps your back covered.

It looks simple. It's properly built.

• 100% fine merino wool
• Midweight 200gsm fabric
• Slim fit for layering
• Flatlock seams to reduce friction
• Gusseted underarms for freedom of movement
• Extended rear hem for extra coverage

How we wear it: under a Filson flannel shirt, an Iron & Resin overshirt or a heavyweight wool jumper, with a waxed cotton jacket over the top once you head outside. It's also clean enough to wear on its own.

Icebreaker Men's Merino 200 Oasis Long Sleeve Half Zip

Same merino and same build as the Crewe, with a raised collar and a half-length zip. That small change matters. Zip it up when the wind bites and you want your neck covered. Open it when you're working, moving or heading indoors and need to shed some heat.

It suits days when the temperature and your workload keep changing.

 

• 100% merino wool
• Midweight 200gsm construction
• Half-zip neck for adjustable ventilation
• Slim fit
• Flatlock seams
• Gusseted underarms
• Extended rear hem

How we'd wear it: under a Swanndri wool shacket or a Filson field jacket, with the collar showing above the outer layer. On its own with dark denim and a pair of Red Wing boots, it looks the part too.

Icebreaker Men's Merino 200 Oasis Leggings with Fly

People fuss over their top half and forget their legs. Anyone who has spent a winter day on their feet outdoors knows how that ends.

These go under jeans, canvas trousers or outdoor trousers. They're 100% merino jersey (waistband excepted), so you get the same temperature regulation and moisture management as the tops. The gusseted construction lets you move, flatlock seams keep chafing down, and there's a functioning fly, which you'll appreciate the first time you need it.

 

• 100% merino wool jersey, excluding waistband
• Midweight 200gsm fabric
• Contoured pouch with functioning fly
• Gusseted construction for mobility
• Flatlock seams for comfort
• Slim profile for wearing under trousers

How we'd wear them: under heavyweight denim or cotton canvas on cold days outside, whether you're working, walking or standing around waiting for something to happen. You stop thinking about them once they're on. You just notice you're warmer.

Layering: Warm Without Dressing Like a Mountaineer

Layering isn't only for blizzards and summits. It's how you stay comfortable when the temperature changes during an ordinary working day. Done properly, it looks good as well.

Layer one: the merino base. An Icebreaker 200 Oasis Crewe or Half Zip, worn close to the skin. It insulates and manages moisture without the bulk of a cotton sweatshirt.

Layer two: shirt, overshirt or knitwear. This is where the character comes in. A heavyweight Filson Alaskan Guide Shirt, an Iron & Resin flannel, a wool jumper or a Swanndri shacket. With the merino working underneath, you don't need to pile on layers to stay warm.

Layer three: the jacket. Pick it for the weather. A waxed cotton Filson Cruiser for cool, damp days. A heavier insulated jacket when it really turns. A waterproof shell when the rain sets in.

The outer layer takes the wind and weather. Everything underneath keeps you comfortable. It's a simple system, and it works.

Three Ways to Wear Merino Beyond the Mountains

1. The everyday heritage look. Oasis Crewe, heavyweight checked flannel, dark denim, leather boots, and a waxed cotton jacket on top. You get a proper thermal base, and the outfit still looks like classic workwear.

2. The country weekend. Oasis Half Zip under a wool shacket, with canvas trousers and outdoor boots. Good for a long walk, ready for changeable weather, and presentable enough for the pub afterwards.

3. The cold-weather essential. Oasis Crewe and matching merino leggings under your usual winter clothes. Add a wool jumper and an insulated jacket and you've got a serious cold-weather system without the bulk. It suits winter walks, country sports, outdoor events and those bitter days when ordinary clothes aren't enough.

Merino vs Synthetic Thermals

Synthetics have their place. They're hard-wearing, often cheaper, and can dry faster once they're soaked through. We have no quarrel with them.

For everyday winter wear, though, merino has a lot going for it.

Merino wool	Synthetic thermals
Natural, renewable fibre	Generally petroleum-derived fibres
Excellent temperature regulation	Performance varies by fabric design
Naturally resists odour build-up	Often need added odour-control treatments
Soft against the skin	Can also be soft and comfortable
Absorbs moisture vapour within the fibre	Often moves liquid moisture well and dries quickly
Suits everyday and multi-day wear	Popular for intense activity and quick drying

What appeals to us about merino isn't a grudge against synthetics. It's that a natural fibre performs this well and is still comfortable enough to wear every day. That's worth investing in.

Looking After Your Merino

Good kit deserves a bit of care, and merino doesn't ask for much.

• Machine wash cold on a gentle cycle, following the garment label
• Use a mild detergent
• No fabric softener, no bleach
• Don't tumble dry
• Dry naturally, away from direct heat
• Air it out between wears when you can

Because merino resists odour, you do not need to wash it frequently. Wash it when it needs it, especially after a hard day's sweat. Treat it right and it'll give you season after season.

Is Merino Worth the Money?

A good merino base layer costs more than a cotton tee or a cheap synthetic thermal. Look at what you're getting: natural insulation, breathability, moisture management, odour resistance and comfort next to the skin.

Then there's versatility. The same thermal top that keeps you warm on a cold hillside goes under a flannel shirt on a working day, under a jacket for a weekend away, or on its own when the weather allows. That's a lot of use from one garment.

We've always believed in buying fewer things and choosing them well. Icebreaker merino fits that approach.

Get Kitted Out at Natural Man

Building a winter wardrobe starts at the foundation. The Icebreaker Men's Merino 200 Oasis Long Sleeve Crewe, Half Zip and Leggings with Fly give you a natural, practical way to stay warm without carrying extra bulk.

Pair them with heavyweight flannels, wool overshirts, quality denim and dependable outerwear from brands we know and trust. The best winter clothing isn't always the heaviest. It's the kit that works together.

Natural materials. Proper layers. Quality Gear for Life.