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Merino Thermals and Merino Base Layers direct to our UK customers

For over 40 years, we’ve been manufacturing the world’s finest merino wool base layers and thermal underwear in our Melbourne, Australia, factory. Now serving UK customers directly, we bring you authentic Australian-made merino thermals designed to handle the British climate with ease.

Whether you’re working outdoors in the cold and damp, hiking the Lake District, cycling Scottish trails, or simply looking for superior thermal underwear for everyday comfort during British winters, our 100% merino wool clothing provides unmatched warmth without bulk.

Why Australian Merino for UK Weather

Perfectly Suited to British Conditions

Handles Damp & Cold: Unlike synthetic base layers, 100% merino wool wicks moisture away from your skin while retaining warmth – even when damp. Perfect for the UK’s wet, cold climate.

All-Day Comfort: Our double-knitted merino base layers regulate your temperature whether you’re outdoors in freezing conditions or indoors with central heating.

No Odour Build-Up: Merino wool naturally resists odours, so you can wear your thermals multiple days without washing – ideal for multi-day hikes or work wear.

Fully Machine Washable: Unlike hand-wash-only merino brands, our unique double-knit construction means you can machine wash and tumble dry our thermals with confidence.

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Featured Products

Australian-made Merino wool clothing

Shipped direct to UK Customers

Merino Skins® Base Layers

Merino Skins® are stylish, high-performance, breathable Merino activewear that combines performance with function. Made from the finest, softest Australian Merino wool, Merino Skins® keep you blissfully warm when needed most. Naturally superior moisture-wicking and odor-fighting, helping you feel great all day, whether you’re skiing, camping, mountain climbing, running, hunting or wearing around the house or office. The unique temperature regulating, odor, UV resistance and moisture controlling properties of Merino Skins® Merino wool base layers ensure you stay at your optimal body temperature in all conditions.

Merino Skins® base layer thermal wear have appeared in various Olympic events, featuring in the opening ceremony of the 2000 Olympic Games in Sydney and as the preferred thermal underwear for the Australian Winter Olympics Team at the 2002 Salt Lake City Winter Olympic Games.

We’re passionate about Australian Wool

Ktena Knitting Mills is an authentic, independently owned Australian manufacturer of high-quality Merino wool thermal and activewear.

Our range of Australian Merino wool garments is designed, knitted, dyed, sewn and packaged at our factory in Melbourne, Australia, ensuring exceptional style and sustained quality.

Ktena Knitting is committed to the authentic Australian manufacture of quality woolen products. We passionately believe in bringing wool to life through our finest Merino wool garments that are soft, comfortable and a pleasure to wear.

As a leading manufacturer of Australian merino wool garments, Ktena embraces the history behind our wonderful woolen knitting mill, with our growing range of uniquely Australian Merino wool products.

Ktena manufactures both Merino Skins® – performance sports style ranges and the famous Thermo Fleece® range – a more casual everyday wear selection.

Learn More – Merino Skins®
hiking lady wearing long sleeve merino t shirt and merino long johns
hiking lady wearing short sleeve merino t shirt

Thermo Fleece® Merino Underwear

Thermo Fleece® underwear is the unique result of a perfect blend of sophisticated technology, wool growing in Australia.

Australia’s superfine Merino wools represent over 100 years of expert breeding and refinement, resulting in only the softest, finest and whitest Merino wools in the world. Prickle-free, our Merino wool thermal garments are available in both double knitted interlock fabric and in our exquisitely feminine pointelle pattern fabrics, without side seams and are fully machine washable.

A Thermo Fleece® garment is your guarantee of unsurpassed luxury, comfort and warmth without compromise…naturally.

Why Thermo Fleece?

Thermo Fleece® woolen underwear keeps you warm as toast in the coldest conditions without ever feeling clammy – even if you’re wearing rainproof clothing over the top!  Thermo Fleece® merino woolen underwear offers the very best in quality; it’s knitted from 100% pure super soft wool from Australian Merino sheep.

Developed after years of research, Australian super soft Merino wool is blissfully comfortable and prickly free against the skin, yet it’s incredibly easy to care for – the unique double knit interlock and pointelle pattern knit fabric guarantees long wear and no shrinkage, and you can even machine wash it. All garments are also “side seam-free” for supreme comfort. Try Thermo Fleece® woolen underwear and enjoy the difference.

Learn More – Thermo Fleece®
Ktena Knitting Mills place picture
4.8
Based on 86 reviews
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Marc Sinatra profile picture
Marc Sinatra
4 months ago
I have tried merino baselayers from numerous different companies and Ktena's products beat them on quality and price. In future, I will be purchasing my merino products exclusively from Ktena.
Brook Williamson profile picture
Brook Williamson
7 months ago
It took me far too long to find genuinely high-quality merino thermals, but I finally stumbled across Ktena — and I’m so glad I did. I bought three pairs of their merino skins and I’m absolutely blown away by the quality and the affordable price.

This is a premium product that easily outperforms the big-name brands like Macpac and Kathmandu, who usually sell poly-blend materials at outrageous prices. Ktena’s thermals are the real deal, and genuinely unmatched. Highly recommend.
Adi profile picture
Adi
7 months ago
My first order with Ktena and it won't be my last. The products I ordered - merino boxers and a merino long sleeve top are so comfy. I also sent a query about my order and received a very prompt and helpful reply. Very good customer service, which is a rare thing in 2025.
warehousespeedup profile picture
warehousespeedup
8 months ago
I bought two sets of merino long sleeves and long johns online. The first time, one set was missing, and the second time, the sizes were wrong. This initially made me feel that the shopping experience was very bad. However, fortunately, they corrected their mistake in a timely manner. Overall, this is the kind of attitude that should be expected, and I appreciate their prompt remedy.
Oshin profile picture
Oshin
10 months ago
I purchased several pairs of long johns, but after just 4-5 washes, these wool ones have worn noticeably faster than the cotton ones.
Doug Heslop profile picture
Doug Heslop
11 months ago
The best merino undershirts at good prices. These are far better quality than what you can buy at a hiking shop, and for less money. Their light weight ones are similar to the weight of the normal hiking merinos, whilst their standard shirts are warmer. Made in Australia and Aussie owned.
Rajni Bhinda profile picture
Rajni Bhinda
12 months ago
I ordered a couple of base layer Merino skins from Ktena Knitting, and I received these today, on-time and well packaged.
I am pleasantly surprised by the excellent quality, feel and fit of the skins, just perfect for my cycling needs in the winter months.
The quality is far superior to base layer merino wool garments I bought from AliExpress, and the price is not much higher.
Well done Ktena Mills.
Highly recommended.
Peter Brody profile picture
Peter Brody
1 year ago
My wife and I went to Ktena in Oakleigh on Saturday with thoughts
of purchasing a couple of their woollen thermal products.
We met Denise on arrival who gave us fantastic service and went out of her way to make sure all the products fitted our needs perfectly.
The quality and feel of the Merino thermals was excellent and are all made on site by an Australian owned company.
We found the pricing to be very reasonable for the products offered and even better if you can purchase direct at the factory.
Instead of purchasing a couple of items we later left the premises with 21 items of Merino wool thermals with big smiles on our faces.
I would thoroughly recommend Ktena for all your under garment thermal needs with the quality and service they provide being exceptional in a very friendly environment.
Brian Cowper profile picture
Brian Cowper
3 years ago
With a recent bout of cold weather in Melbourne I was looking for top quality Merino Underwear for an elderly friend of mine. Ktena provided excellent service and products with prompt posting and packaging and making the gift something special. My elderly friend pressed them into service a couple of weeks ago and commented to his daughter "I love them!". Thanks Ktena.
Kim profile picture
Kim
4 years ago
Wonderful place to get those thermals. Australian wool, Australian made and local to my area. Great prices too. A lovely lady served me. Knowledgeable and so helpful. Thankyou so much Ktena.
E Ward profile picture
E Ward
4 years ago
Ktena make a true, quality product. For the long johns and top, I ordered up a size from normal leggings and t-shirt sizes that I would buy, and they were a nice, snug fit. They are the Merino Wool and very soft, made very well, and highly recommended!
Desmond Fittock profile picture
Desmond Fittock
4 years ago
I have placed 2 orders in the last 2 weeks and both have received
extremely fast attention, and have both arrived within a few days.
Great service, thank you.
Best regards,
Des.
Gus Fourteen profile picture
Gus Fourteen
4 years ago
Found these great value merino skins on the website, and decided to visit the factory outlet in Oakleigh. A big drive from Brunswick, but well worth it. Excellent quality Aussie product, friendly service. Ended up buying 4!
Janet Long profile picture
Janet Long
4 years ago
I found the staff are very polite and helpful. The product are the highest quality. I would recommend anyone who wants to buy thermal Underwear to go Ktena Knitting Mills
Pete Jenkins profile picture
Pete Jenkins
4 years ago
Warm and comfortable. 1st merino shirt lasted three years with constant use thru winter, and it's still going. Updated in 2022 with long johns for me and thermals for my wife. Very happy with the products. I'm in the outdoors all day (job and leisure) and they are great for managing sweat and warmth. Thanks Ktena
Louise Waller profile picture
Louise Waller
4 years ago
From the moment I walked in I was met with hostility. I wanted to take my disabled mother there but she wouldn’t be able to get up the 3 steps at the front, so I asked if there was another access. There was none, so I asked if could send a photo of the different necklines to my mother so that she could make a selection. The lady threw the spencers on the table and left the showroom, saying ‘I have 1000 things to do’. She was using an extremely rude and bothered tone. When she returned I asked if items could be returned if they didn’t fit and I was met with a complete telling off. In my mind it was a simple question that could be answered with a yes or no. The lady working today clearly didn’t want to be dealing with customers. This shop does not have any disability access, which is understandable for an old building. But my attempts at helping my mother still access this product were met with hostility. It’s a shame people can’t be more accommodating of the needs of people with mobility issues. My mother still doesn’t have a spencer and this shop was so hostile towards my attempts to buy one for her.
Rose Ronne profile picture
Rose Ronne
4 years ago
I found this Company via Google. I have never had such a prompt and courteous reply from any Company , and I have been many years on this Earth..I have recommended my co-workers to Ktena and always mention their Fast Delivery and have recieved mentions that they have agreed.
Silvana Monte profile picture
Silvana Monte
4 years ago
Ktena Knitting Mills, customer service is exemplary. My order was missing my husbands Thermo Fleece when my package arrived. I emailed them and almost immediately I had a reply, that the third item had been overlooked and that it had been packed and sent via express post with an extra garment. The products are delightful and feel warm and soft on your skin. Service like this is unheard of these days, so a big pat on the back to your company and I will not hesitate to recommend Ktena to my friends.
Tony Laurent profile picture
Tony Laurent
4 years ago
Bought Merino Skins and Thermal Fleece t/under shirts from Ktena. Great products ! Fast delivery.

What I really love about Ktena is that they are Aussie owned and the goods made here in Victoria. I urge all my fellow Australians to support this company - do not buy cheap suspect rubbish from China. Oh, and that buy bona fide Aussie policy goes across the board for all goods and services. Sometime costs a bit more, but you get very good quality and you are safeguarding our kids' futures.

Thank you Ktena !
Faye Charnstrom profile picture
Faye Charnstrom
4 years ago
Because of incorrect sizing I returned my purchases within 2 days of purchase. After speaking to Ktena, the management generously agreed to give me a full refund. I am still waiting. PayPal now is involved trying to resolve this. Even after aust post tracking had delivered the purchase to the business on the 10 th of May. No response.
Periklis Micha profile picture
Periklis Micha
4 years ago
Just received my merino skin garments. Extremely satisfied. High quality and Australian made! Recommended to anyone looking for premium Australian made merino wool garments.
Wayne Mill profile picture
Wayne Mill
4 years ago
What a fantastic experience we had going to Ktena for the first time. The service was 5 star and we were thankful for the experienced advice we received and the Merino clothing was
Of such high quality at such great prices. And most of all it is all MADE IN AUSTRALIA.
Well done Ktena.
Go visit or buy online you will not be disappointed.
Stephen Chapman profile picture
Stephen Chapman
5 years ago
Very happy as I've recently received my thermal tops. They are sooo warm. I have the crew neck & half zip, both long sleeve. Nothing wrong with my original tops, i made the mistake of showing them to my snow skiing daughter in canada & they were missing from my bag when i returned......
Adrian Barker profile picture
Adrian Barker
5 years ago
I have bought woollen thermals from quite a few different suppliers over many years.
Some are OK and some are absolute rubbish!
And then there is Ktena Knitting Mills, right here in Melbourne.
Once you wear Ktena products you will never go back to anything else!

They are by far the very best.
Not itchy, fantastically warm and machine washable (wool cycle of course!)
And on top of that the clever style of knit means they last a very long time.

So, if you want the very best in beautiful, comfortable woollen thermals, do what I do, only buy Ktena!
Bill Vlass profile picture
Bill Vlass
5 years ago
I purchase the Merino Skins with zip for many years, they've become like a second skin.
Best quality you can get.
The staff is pretty good too!
God bless you's all at KTENA.
Allan Duncan profile picture
Allan Duncan
5 years ago
just bought 2 thermo merino fleece singlets. Very warm and are great quality made singlets. Delivery was fast. Very happy.
Mel Meunier profile picture
Mel Meunier
5 years ago
The quality of these products is amazing and their customer service is fantastic. I ordered some items from their Thermo Fleece collection and was sent the wrong items. I emailed the company to let them know that I had not received the items I ordered. The company responded promptly and I received the items I had ordered within a few days. They did not require the other items to be returned and I was pleasantly surprised with a free gift. I highly recommend this company for quality products and great customer service.
Teresa Pelle profile picture
Teresa Pelle
5 years ago
Ktena's products are simply beautiful and of a high quality. Their prices are so competitive compared to other similar products offered in large retail stores.
I love their quick and effortless service, and supporting local is always my priority!
Marty Hicks profile picture
Marty Hicks
5 years ago
Fantastic product and great customer support. Keeping me warm outside all day long in Saint Paul sub-zero temperatures.
Well it has been a revelation to wear these Merino Skins, nothing short of amazed. Had no idea this level of quality and comfort existed. Communication was as superior as their product. Happy I persevered in searching for such quality. Guess that saying proves true in this case, you have to kiss a lot of frogs before you find a prince. Thanks to all of you at Ktena Knitting Mills for your commitment to quality of comfort!
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Joy Kaias profile picture
Joy Kaias
6 years ago
Have purchased several merino tops from Ktena on two occasions now. The tops are high quality and Ktena’s service is exceptional. Highly recommend.
Excellent quality, even better pricing and service. Support the Aussie made gear, it's better in all aspects.
Elena Semenova profile picture
Elena Semenova
6 years ago
I highly recommend Merino wool leggings. I suffer from arthritis in both knees and find suitable pants to wear outdoors in winter - is a challenge. I purchased these wonderful leggings and could not believe the change it made! I enjoy being outside and hardly feel the stiffnessin my legs. Great product!
Stu H profile picture
Stu H
6 years ago
Very friendly staff and excellent clothing, couldn't be happier with the quality and price. I bought the 'Merino Skins' in long sleeve, crew neck (grey) which I've used now on several very cold nights on the motorcycle, works perfectly and very comfortable under the jacket. Also got a pair of "Thermo Fleece" long johns' (black) which are also excellent. Also tested these on the motorcycle and crawling around under the 4WD on cold concrete, works perfectly, very comfortable. Price is also fantastic considering it's Aussie made. 100% will be coming back for more :-)
Cheryl L profile picture
Cheryl L
6 years ago
Soft and comfortable merino tops and bottoms, best I've found so far in several Australian brands, both for quality (and longevity), and price.
My original Merino Skins are several years old and still going well, no holes, soft and warm despite being worn most of winter for 5 years. They also have a great range of wool blend in a bunch of styles, plus the service in the shop is excellent. Do yourself a favour and buy a set of thermals.
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