Extra-strong merino wool T-shirts.

Why we add 20% nylon to our superfine merino wool

Anyone who has worn 100% merino wool T-shirts will recognise the following pattern. It feels great for the first few months, but then the first holes start to appear. Typically around the navel or in places where a rucksack rubs. Thin merino T-shirts are fragile, and the yarn breaks when there’s a lot of friction. We didn’t want to have to choose between softness and strength, which is why we developed ClimaForce merino: 17.5-micron merino wool reinforced with a fine nylon filament. Real-life tests with the T-shirts say it best. Most customers wear their T-shirts for years before the first hole appears. What’s more, the T-shirts retain their shape wash after wash. You get the softness, odour resistance and breathability of merino wool, but far fewer holes.

A T-shirt you can wear to the office

Most merino T-shirts are designed for the mountains, and they look the part. We’ve deliberately opted for a minimalist design, suitable for everyday wear. No sporty, body-hugging fit, no logos, and a weight of 170g/m² that drapes beautifully and is ideal for wearing all year round. The neat round neck or V-neck is finished in a fine rib, ensuring it always sits neatly. Pair a black merino T-shirt with a blazer, or simply with smart trousers, and it exudes class. It doesn’t crease either. Pack it in your suitcase, take it out two days later, and it’s immediately presentable. That’s just one of the reasons why frequent flyers are such big fans and why our T-shirts form the basis of our merino business collection.

Wear your T-shirt for several days in a row, and wash it less often

Merino wool is naturally odour-resistant. Odour-causing molecules are trapped in the core of the fibre and are only released when the garment is washed. This means a Wolk T-shirt stays fresh-smelling for several days in a row. Customers often tell us they can travel for a week with just two T-shirts. And when it does need washing, simply wash it at 30°C. Washing them less often also means they are less likely to fade and will last longer. You can find all the details on our merino wool care page.

Cool in summer

When cotton absorbs sweat, it stays wet for a long time. Merino wool is very good at wicking sweat away from the skin to let it evaporate on the outside. This keeps you dry, and the evaporation process provides active cooling. So you’ll stay comfortable even after a sprint to catch your flight. Merino wool also offers natural UV protection, far more so than a thin cotton T-shirt. Even though it may still sound strange to some people, a merino wool T-shirt is one of the most comfortable things you can wear in summer. That’s why our Oscar and Victor T-shirts form the basis of our ‘merino wool in summer’ collection.

The perfect base layer in winter

As the weather gets colder, the same T-shirt makes the perfect base layer. In cold conditions, merino wool retains your body heat well and remains comfortable even when it has absorbed a little moisture. This means that even a thin layer provides a surprising amount of warmth. A thin merino T-shirt worn under our merino wool dress shirts provides an extra, breathable layer that keeps you comfortable, from a cold station platform right through to a hot meeting room. And simply pull a merino wool jumper over it when it gets really cold. One merino T-shirt for all four seasons.

Also perfect for hiking trips

We have lots of customers who bought their first Wolk T-shirt to wear at the office who now wear it on hiking trips too. And that’s where you can really see what merino wool does best: wicking away sweat, drying quickly, regulating temperature and staying odour-free for several days in a row. With just two T-shirts, you can easily head into the mountains for a week, meaning you can leave a pile of synthetic base layers at home.

Round neck, V-neck or undershirt

Our Oscar merino T-shirt with a round neck is our everyday staple and is available in a whole range of colours (black, navy, burgundy, green and various shades of blue). Our Victor merino T-shirt with a V-neck won’t show up under an open shirt collar. We also have both in white. These are slightly see-through, making them particularly suitable as undershirts.

Do you prefer something a bit smarter?

For occasions where a T-shirt is a bit too casual, a merino wool polo shirt can offer the same comfort, but with a collar and buttons. It has the same odour resistance and temperature regulation, but is a bit smarter for a meeting or a night out.

A truly European brand

Wolk’s entire merino wool collection is designed in Antwerp. We knit the fabric in the north of Portugal, in the Braga region, and the garments are also made there, just a few kilometres away. This means we have a short supply chain, comply with European environmental and labour standards, and work with a team we’ve come to know well. The merino wool we use is, of course, mulesing-free and carries the Responsible Wool Standard label. This means all the wool can be traced right back to the farm where the sheep are kept. The fabric itself is OEKO-TEX certified. You can read more about our sustainable approach here.

What our customers say

Wolk scores 4.9 out of 5 from over 500 verified customer reviews. The same themes often come up in the T-shirt reviews: customers switching from the big brands because our T-shirts are far less likely to develop holes. Customers who, after wearing our T-shirts for five years, say they still look as good as new. And men who take just two Wolk T-shirts with them on a week-long trip and still come home feeling fresh. They often note that our T-shirts aren’t cheap, but when you consider how long they last, they don’t think they’re expensive either.

Buy more and save more

When you have a good merino T-shirt, you’ll put it on every morning. So our customers don’t stop at just one. From two T-shirts onwards, we offer a bundle discount, and you can mix and match different styles and colours.

Not sure about your size?

Once customers have placed their first order, we often see them back again soon for more. But when making that first purchase, there’s sometimes some uncertainty about the size. That’s why we’ve put together a handy size guide, which lets you quickly compare sizes with a T-shirt from your wardrobe. Or, if you’d prefer some help, we are easy to reach via chat or email. And please note that size exchanges are free within Europe.