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100% Ultrafine Merino T-Shirt with Optimized User Experience

Years of product development to bring you the next level merino wool t-shirt today. Clean in design for versatile use, unparalleled durability due to high density spinning technology, incredibly smooth no-itch touch with selective 17.50 micron raw material usage - not to mention all the performance properties listed below. If there is one t-shirt you not only could, but you’d want to wear with anything and everywhere, this would be it.

Instant gratification the moment you put it on. The routines in your active life become suddenly enjoyable. You will save time and gain capacity. The user experience is not only optimized for the user, but also for the planet. The naturally innovative fabric is 100% natural and 100% bio-degradable, completely unharmful for you and your surroundings. Timeless straight shape, relaxed fit and deep color makes it relevant today and next decade. It’s an investment, which when taken care of increases in value through the shared memories of your adventures together.

Key benefits include: 

Anti pilling merino wool benefitHigh density spinning. FORMAL FRIDAY® manufacturing process ensures atypical strength to comfort ratio. Ultrafine fibre is spun into a 1/060NM yarn with latest textile engineering technology for a anti-pill surface.

Thermal control merino wool benefitThermal control. In contrast to synthetics, merino wool is an active fibre that reacts to changes in the body temperature helping you stay warm in cold climate, and cool in hot weather.

Soft touch merino wool benefitSoft touch. Ultrafine 17.50 micron fibre is extremely fine, enabling it to bend far more than coarser wool. This property makes the ultrafine merino wool t-shirt feel soft and luxuriously gentle next to your skin.

Moisture wicking merino wool benefitMoisture wicking. Merino absorbs water molecules by pulling moisture away from the skin to the surface of the fabric where it evaporates. Ultrafine merino is also able to move vapor before it even turns to sweat.

Quick drying merino wool benefitQuick dry. Ultrafine merino wool fabric dries almost as quickly as quick-dry synthetics and a lot quicker than cotton. After a sweaty activity or washing, the product is ready to be used in no time.

Anti bacterial merino wool benefitAnti-bacterial. Due to the complex structure of merino it is naturally anti-bacterial and anti-microbial. The fabric inhibits the growth of micro organisms making the t-shirt odor resistant, which means far less washing.

Biodegradable and environmentally friendly merino woolLow impact. FORMAL FRIDAY® t-shirt is 100% natural and 100% biodegradable. Our production process involves minimal use of strong chemicals, such as chlorine, making it safe for the user and the planet.

Easy care merino wool benefitEasy care. At microscopic level, each ultrafine wool fibre is like a coiled spring that returns to its natural shape after being bent. This gives the garment a natural resistance to wrinkles, and saves you time from ironing.

Travel friendly merino wool benefitTravel friendly. Merino has a natural protective layer that helps prevent stains from being absorbed. That in addition to anti-bacterial properties makes it perfect for minimalist life and travel.

Breathable merino wool benefitBreathable. Merino wool is one of the most breathable fibres in the world. Ultrafine merino fibres absorb large quantities of moisture vapour then move it away to evaporate into the air. 


Raw material specifications:

100% Ultrafine Merino Wool

Fineness description WV Super 120's

Average microns WV 17.50μm

Weight specifications:

Weight 156g/m2

Yarn count 1/060Nm

Mechanical features:

UNI EN ISO 12947-2 Abrasion resistance (9kPa) 20,000

UNI EN ISO 12945-1 Pilling box (14,000 rev.) 4/5

UNI EN ISO 13938-2 Bursting strength 87 KPa


True to size, we recommend choosing your normal size. Product size table in centimeters measured flat on a table. Compare these measurements to a t-shirt you already have to define your correct size.

a. BODY LENGTH 65,5 67,5 69,5 71,5 73,5 75,5 77,5
b. HALF CHEST  45,5 47,5 49,5 51,5 53,5 55,5 57,5
c. HALF WAIST 45,5 47,5 49,5 51,5 53,5 55,5 57,5
d. SLEEVE LENGTH 20,5 21 21,5 22 22,5 23 23,5
e. HALF CUFF OPENING 14,2 14,8 15,5 16 16,6 17,2 17,8
f. SHOULDER TO SHOULDER 42 43 44 45 46 47 48

 formal friday t-shirt product measurements

In case you are between sizes, we recommend sizing up due to wool's natural tendency for shrinking during the first wash. Refer to care instructions attached in the garment before first wash.





Customer Reviews

5 Based on 9 Reviews
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Blaz .

Durable and very soft to the touch

The material is silky-smooth and the t-shirt feels really nice against the skin. Unlike many other Merino t-shirts, this one seems very durable. The fabric is denser and stronger than at most competitive products. I was wearing the t-shirt on hiking-intensive holidays in the Italian Dolomites and I was very satisfied with it. I published an in-depth review of the t-shirt (https://besthiking.net/formal-friday-merino-t-shirt-review/) if anybody wants to learn more.

Gregor S.

Best merino t-shirt yet

Great shirt. First 6 months of ownership I didn't wear it much but these last 5 months have seen more wear and washings. Holds up VERY well better than my former favorites *c*br**ker shirts. I almost always wear wool closest to my body. and I love the Formal Friday garment.

Ian P.
Australia Australia

T shirt purchase

Very easy website to follow , item turned up in Australia in 6 days , amazing, product very luxurious but as a wool grower was 2 b expected its a great natural grown fibre

Stefan S.
Finland Finland

Super soft, high quality T-shirt

A soft, odor-resistant, wrinkle-resistant & temperature-regulating T-shirt! Since I got my T-shirt, a couple of weeks ago it is almost the only shirt I wear. I have only needed to wash it once, and that was because I dropped some food on it.

Paavo K.
Finland Finland

Good product

I already have two of them