COSILANA

Noir / 36/38

49,90 EUR

COSILANA - Long-sleeved T-shirt - Wool-silk

Cosilana

COSILANA - Long-sleeved T-shirt - Wool-silk

49,90 EUR

In stock

ColorNoir

Size 36/38 40/42 44/46 48/50

You are looking for:

A "second skin" effect undergarment, discreet, enveloping and comfortable under all your clothes (wool, cotton, synthetic), with a naturally silky feel directly against the skin?
A multifunctional top for all year round, for everyday wear, sleeping, or as a thermal layer?
A garment suitable for very sensitive skin, with naturally breathable and antibacterial properties?

Description

Long-sleeved T-shirt in organic merino wool and silk , from the German eco-friendly brand Cosilana.

This is the garment to have as an essential first layer , the one that directly influences the overall thermoregulation of the body.

This precious layer, made of untreated natural fibers, keeps the skin dry. The air thus dried can then be warmed by our own body heat and retained by the pure wool intermediate layer worn over it.

The first layer is the most important. It is in direct contact with the skin and governs the body's entire thermoregulation. It must be natural!

Its role is not to "heat up", but to:

absorb moisture (perspiration),
keep the skin dry.
create a thin layer of dry air around the body.

Untreated wool (or wool-silk) is particularly effective for this function, unlike synthetic fibers which retain moisture against the skin.

An extremely soft, thin, and warm top, designed to be worn directly against the skin. Ideal as thermal underwear in winter, but also as a light top or sleepwear.

The wool and silk blend combines:

the thermoregulatory and breathable properties of wool,
the softness and silky feel of silk, particularly pleasant on the skin.

Wool is naturally resistant to odors and dirt thanks to lanolin, while silk provides a smooth and protective feel, comparable to a textile cocoon.

Strengths

Suitable for sensitive and reactive skin, often appreciated in cases of skin irritations.
The sleeves are intentionally slightly shorter to prevent the t-shirt from showing under the garment worn over it, for a discreet and neat layering look.
Excellent thermoregulation: warm when it's cold, breathable when it's mild.
Ideal as a base layer, pajamas or for winter travel.
Can be worn alone or under other clothing.

Color: Off-white or Black

Available sizes:

36/38 - 40/42 - 44/46 - 48/50

Flat measurements (indicative)

Please note: measurements are approximate and may vary by 1 to 2 cm. Natural materials are elastic and react to humidity, which may slightly affect the dimensions.

Therefore, it is impossible to guarantee perfectly identical measurements from one item to another, regardless of the brand, when working with natural textile fibers.

	036/038	040/042	044/046	048/050
Length, cm	65	68	70	72
Width, cm	30	32	35	38
Sleeves, cm	55	56	57	58

In the photos: shown in black, I intentionally present all sizes, up to 48/50 (see details in the photos), to demonstrate the fit, primarily in length. This applies to all Cosilana women's tops offered.
These garments always remain enveloping: this is the principle of a "second skin". They are not designed to be loose, even in larger sizes.

For everyday wear, under my clothes, I wear Cosilana in size 36/38 (I'm 1.77 m tall and wear a 38/M), to prevent the sleeves from showing under the sleeves of the clothes I wear over them. As a nightgown, I wear size 48/50 for a looser, more enveloping fit.

Choose yours according to its intended use.

Living Wool™ - Living Wool is an internal expertise concept-label developed by Maison de MaMoulia to identify products whose wool fiber is preserved as close as possible to its natural state, in the absence of industrial anti-felting treatments.

Untreated wool - an authentic and living fiber

This garment is made from untreated merino wool , without any industrial anti-felting treatment (such as Superwash, enzymes, Naturetexx®, polymer coatings, silicones or other similar processes).

The fiber thus retains its intact natural structure , responsible for its unique properties , as well as its natural lanolin.
This is what we call authentic and living wool.

Unlike wools treated to remove scales, artificially soften the fiber, and withstand machine washing, this wool naturally retains:

its thermoregulation (neither too hot nor too cold)
its ability to absorb moisture while remaining dry to the touch
its natural antibacterial properties
its resistance to odors and dirt
its natural elasticity (the garment returns to its shape when at rest)
its self-maintenance capacity through simple aeration

It is this intact fiber that allows for reduced washing, lasting, healthy and ecological comfort, and the preservation of a garment designed to last over time.

The natural benefits of merino wool

Naturally breathable, wool allows moisture to evaporate.
Warm but never stifling, suitable for all year round
Regulates temperature and creates a microclimate around the body
Resistant to odors and stains, therefore less frequent washing is required.
Antibacterial thanks to the pH of untreated wool
Elastic, returns to its shape after use (knees, buttocks, fabric stretching)
Soft and comfortable against the skin
Flame-retardant and UV-protective
Antistatic
100% natural, recyclable and – truly – biodegradable

Merino wool 70% / silk 30%

Cosilana clothing is made exclusively from high-quality natural fibers. The brand uses merino wool, fine silk, and organic cotton, as well as blends of these natural fibers, selected for their softness, breathability, and comfort against the skin.

These materials come from controlled organic farming and livestock breeding, without chemical pesticides or synthetic additives.

Untreated wool/silk garments do not need to be washed after each use.

• Routine maintenance

Regular ventilation in the open air (outdoors if possible, or in front of an open window)
Rest after each use: hang on a hanger or drying rack and do not leave crumpled up)
Spot clean stains under running water with Ulrich gall soap or genuine Marseille soap

• Complete wash (when the time comes)

Hand wash only.
Cold or room temperature water
Liquid laundry detergent for wool Ulrich Natürlich
Washing temperature = rinsing temperature
No spin cycle
Dry flat, away from sunlight and any heat source

• Lanolin Maintenance

Use a treatment (every 2-3 washes) occasionally to maintain self-cleaning and thermoregulating properties. Follow the instructions on the product information sheets.

Cosilana is proud to be one of the few remaining brands that have not used any treatment for over 50 years, to preserve the properties intact!

Cosilana produces its clothing ecologically and sustainably in Germany, in the Baden-Württemberg region. The brand prioritizes responsible production, using materials and processes that meet high environmental standards.

The natural fibers and manufacturing processes are GOTS (Global Organic Textile Standard) certified, guaranteeing strict criteria on the organic origin of the materials, ecological processing and production conditions.

For Cosilana, sustainability is not just about raw materials, but the entire production chain. The brand's philosophy is based on daily responsibility and respect for the environment, in order to contribute to a more sustainable future for the planet and future generations.

• Is it hot?
Merino wool is an excellent thermoregulator: it retains heat when it is cold and remains breathable when the temperature rises.
Wool (or a wool-silk blend) doesn't "heat" itself. It absorbs moisture and keeps the skin dry, allowing body heat to then warm this dry air. This warmth will then be better retained by a possible layer of pure wool worn over it.
Therefore, it is not a material that produces heat, but a fiber capable of capturing air, keeping it dry, and then allowing it to be warmed by our own body around the skin, thus creating natural thermal insulation.

• Can this t-shirt be worn on its own?
Yes. It can be worn alone as a light top or undergarment. Its fine, comfortable knit makes it versatile: under an outfit in winter or as a soft top indoors.

• Is it transparent?
The wool-silk knit is fine. In ecru, a slight transparency is possible depending on the light and skin tone; this is less pronounced in black. For outdoor use, it can be worn with a bra or under another layer. The photos give a good idea of the fabric's transparency in both colors.

• Can it be worn for a long time without washing, like pure wool?
No, a little less time, but it's a very personal choice. Wool is naturally breathable and limits odors, which allows you to wash it less often.
The presence of silk doesn't negate this property; it's also a thermoregulating material. However, it's recommended to air the garment between wears to prolong its freshness and lifespan. For example, at my house, Cosilana can only be worn about ten times with intermediate airing (which is already incredible!), unlike pure wool—which can be worn dozens of times or more, depending on the garment.

• Can you sleep in this t-shirt?
Absolutely.
Its fine, breathable knit makes it suitable as loungewear or pajamas. It's exceptionally helpful and invaluable in case of fever, for sleeping in. Choose the larger size 48/50 for extra length if desired.

• Does wool make you itch?
The combination of fine merino wool and organic silk is renowned for its softness. The silk provides a smooth feel directly against the skin, making this garment generally very well tolerated by sensitive skin.
However, since skin sensitivity is individual, perception may vary from person to person.

• Is it suitable for sensitive skin (eczema, reactive skin)?
Absolutely!
Fine wool and silk are breathable natural fibers, often appreciated by sensitive skin, with improvements noted by my clients.
This product is not a medical device, but it is designed to be worn directly on the skin with maximum comfort.

• Can it be machine washed?
No Cosilana wool-silk garment is recommended for machine washing, even on a cold cycle and at 400 rpm (trust my years of experience with this fabric). Even if shrinkage or thickening isn't necessarily and always visible after the first wash, it will gradually appear with each machine wash, accompanied by small holes.
A quick hand wash is simple and accessible to everyone, and helps to preserve this garment so that it continues to take care of your skin and its natural properties in the long term.

• If you're unsure between two sizes, choose the larger one; it will never be too big. In the photos of the long-sleeved black t-shirt, I intentionally show all sizes, up to 48/50 (see details in the photos), to demonstrate the fit, primarily in terms of length. This applies to all Cosilana women's tops offered.
These garments always remain enveloping: this is the principle of a "second skin". They are not designed to be loose, even in larger sizes.

• This product is one of my absolute favorites and I highly recommend it! It's an essential base layer that will influence all your other layers of clothing, and your mood too.

• Invaluable if you sleep on synthetic bedding (especially in hotels, Airbnbs, etc.)

• If you have favorites made of synthetic or treated wool - this first layer made of natural and thermoregulating material can improve your comfort!

• Avoid using deodorants containing oils (organic or homemade): they can clog the fibers and reduce their ability to breathe, just as some diaper rash creams for babies can clog washable diapers.
If an odor persists despite 1 to 2 days of airing in fresh air, the garment may need to be deep cleaned.

• I highly recommend hand washing to preserve the size and structure of the garment.
Ulrich Natürlich products (laundry detergent, treatment, stain-removing soap) are highly recommended.

Depuis plus d’un demi-siècle, Cosilana suit une ligne simple : ne pas corriger la fibre, mais la préserver. À une époque où les traitements industriels se sont généralisés pour adapter les textiles aux habitudes modernes, la marque a choisi de continuer à fabriquer autrement, en conservant les matières telles qu’elles fonctionnent naturellement.

Installée dans le Bade-Wurtemberg, en Allemagne, la production reste proche du savoir-faire textile régional. Les fibres biologiques sont transformées avec des procédés maîtrisés afin de garder leurs qualités d’origine, tandis que la certification GOTS encadre autant l’environnement que les conditions de fabrication.

Cosilana n’a pas évolué vers une mode plus rapide, mais vers une cohérence plus durable : produire moins d’effets techniques et davantage de stabilité dans le temps. Le vêtement n’est pas pensé pour suivre une saison, mais pour accompagner longtemps son usage quotidien.

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