Heavyweight Ultrafine Merino T-Shirt | Navy

Sale price Price €129,00 Regular price €119,00

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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 1/038NM 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 and pulls moisture away from the skin, into the merino fiber itself, it can evaporate from there without the fabric feeling wet or clammy.

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 195g/m2

Yarn count 1/038Nm

Mechanical features:

UNI EN ISO 12947-2 Abrasion resistance (9kPa) 25,000

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

UNI EN ISO 13938-2 Bursting strength 142 KPa


Product size table in centimetres measured flat on a table. Compare these measurements to a t-shirt you already have to define your correct size.

Depending on the washing program, the product might shrink up to one full size during the first wash. Shrinking is normal phenomenom for 100% merino wool products. We have decided to use minimal amount of resins and strong chemicals such as chlorine which change the physical and chemical structure of the wool fibre. These processes, while eliminating part of the shrinking, are not only hazardous for the environment and for the user, but also makes the product weaker. With this production related decision, we can offer you as natural and safe product as possible.

In case you are between sizes, we recommend sizing up. Refer to care instructions attached in the garment before first wash.

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

Female model is 165cm / 55kg and wears size XS.

Male model is 185cm / 75kg and wears size M.





Customer Reviews
4.8 Based on 33 Reviews
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Filter Reviews:
Ari S.

Excellent T-shirt

Formal Friday’s Merino T-shirts are excellent, durable and great looking.

alexander j.
Sweden Sweden

Excellent product & customer care

Couldn’t ask for a better customer experience. We be a returning customer Alex from Sweden

Christopher S.
United States United States

Awesome 2

The weight of this sweatshirt is just right. Great for layering and for extra warmth. The fit is great. I went with a large in the tee's and XL in the sweatshirt and will buy more in the XL size as that works best for me. Shipping to the states was fast and convenient.

Christopher S.
United States United States


Awesome product. The quality is like nothing I’ve been able to find in the states and I will be buying more. Shipping was super fast and convenient. Thanks for making a great product that will last and makes packing easy.

marios s.
Greece Greece

First time buyer

Very good service, and good quality product. Met all my expectations