Cosilana

Cosilana - T-shirt manches longues enfant, laine-soie-coton Cosilana

Cosilana - Children's long-sleeved T-shirt, wool-silk-cotton

Gris / 116 cm

25,90 EUR

Cosilana - Children's long-sleeved T-shirt, wool-silk-cotton

Cosilana

Cosilana - Children's long-sleeved T-shirt, wool-silk-cotton

25,90 EUR

ColorGris

Size 92 cm 104 cm 116 cm 128 cm 140 cm 152 cm

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Are you looking for:

A gentler alternative if your child still finds pure merino wool slightly irritating, while retaining a natural thermoregulating material?
A garment for very sensitive or reactive skin, with breathable and comfortable fibers?
A thin, discreet, and thermoregulating second skin, to be worn all year round?
A top that helps manage your child's perspiration when transitioning from daycare/outdoors or school/outdoors, to avoid the feeling of cold on a damp back?

Description

Thermoregulating long-sleeved t-shirt in organic merino wool-silk-cotton, from the ecological German brand Cosilana.

An extremely soft, thin, and warm garment, designed to be worn directly on the skin. Ideal as thermal underwear in winter, as pajamas, or as a single garment indoors and in mid-season.

Natural second skin: thin, enveloping, and comfortable.
Natural thermoregulation: helps keep skin dry and limit the feeling of cold after perspiration.
Versatile: thermal underwear, pajamas, or t-shirt worn alone.
Comfortable fit for everyday wear and sleep.

This is the essential first layer garment, the one that directly influences the body's overall thermoregulation.

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

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

Its role is not to "heat," 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 that retain moisture against the skin.

The wool and silk blend combines:

the thermoregulating and breathable properties of wool,
Silk is an exceptionally smooth and fine natural fiber, renowned for its softness and comfort on the skin.
It creates an enveloping sensation, like a protective and soothing textile cocoon, that protects the skin from friction and external aggressions. On the skin, silk reproduces this cocoon feeling: an incredibly smooth, enveloping, and soothing touch that respects the skin and creates a soft barrier between the body and the environment. Combined with merino wool, it transforms this garment into a true living second skin, protective, breathable, and naturally comfortable.

Material precision (wool-silk-cotton):

The presence of cotton (45%) stabilizes the knit and allows machine washing at 30°C (gentle spin max. 400 rpm), with special wool detergent.
This blend offers easier care while retaining the natural qualities of wool and silk. Thermal and regulating performance remains slightly lower than that of pure wool or wool-silk, but perfectly suited for everyday use.

Colors:

Heather blue, gray, pale pink, ecru, heather green, heather yellow, gray/pink stripes, heather wine red/burgundy, heather plum

Available sizes:

092 - 104 - 116 - 128 - 140 - 152

Understanding Cosilana sizes

At Cosilana, each size is designed to last until the next size. For example: a size 92 is designed to cover the entire growth period up to the next size by 12cm each time, i.e., approximately from 92 to 104 cm (and often beyond depending on the child's morphology). 12cm represents on average at least 2 years of growth.

It is therefore not a garment strictly limited to 92 cm, but an evolving size designed to accompany growth over an extended period.

Organic cotton 45%, merino wool 35% / silk 20%

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/cotton garments do not need to be washed after every use. Multiple uses are perfectly possible, provided they are aired out.

• 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

• Washing

Hand washing: cold or lukewarm water, special wool detergent, without rubbing. Use a stain-removing soap beforehand if necessary.

Machine wash: 30°C maximum, gentle spin 400 rpm max., wool program or hand wash. Use a special wool detergent.

This garment does not require lanolin treatment.

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 uses exclusively natural fibers from controlled organic farming and livestock operations, without pesticides or chemical additives. The wool comes primarily from selected farms in Patagonia and meets the requirements of organic agriculture.

Production takes place in Hechingen (Germany), with regional manufacturing allowing continuous traceability and reduced transport.

The yarns used are certified according to the Global Organic Textile Standard (GOTS), which audits the entire textile chain—raw materials, processing, environmental and social aspects—through independent organizations. The brand also stems from the IVN initiative, a long-established natural textile organization.

This approach is based on a constant principle: respect for the environment and for people, with clothing designed to last while preserving the natural properties of the fiber.

• Is it hot?
Yes, but in a thermoregulated way. The wool keeps the skin dry and creates an insulating layer of air warmed by body heat. The t-shirt is thin, but functions as a basic thermal layer.

• Is it worn alone or under another garment?
Both are possible:
- as a tank top on its own in summer, or all year round, or as pyjamas
- as a first layer under another garment

• Can it be worn for a long time without washing, like pure wool?
No, a little less time, but it's very personal. One thing is certain: there's no need to wash this garment after every use.
Wool is naturally breathable and limits odors, which allows for less frequent washing.
The presence of silk does not negate this property; it is also a thermoregulating material, but it is recommended to air the garment between wears to prolong its freshness and lifespan.

• 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.

• Is it machine washable ?
Yes. Wool program at 30°C with gentle spin (max. 400 rpm), special wool detergent

• Choose the size based on the child's height in centimeters, not their age.
Each size is designed to be worn until the child reaches the next size.
For example :
A size 92 can be worn as long as the child measures between 92 cm and 104 cm (the next size up).
and not only at 92 cm

• It is not necessary to wash this garment after each use. Wool-silk garments can be worn several times with simple airing between wears.
Small stains can be cleaned locally by hand, without washing the entire garment.
Even in the case of small urine leaks, a complete wash is not always necessary: airing is often enough to refresh the fiber thanks to the naturally breathable properties of wool.

• This product is one of my absolute favorites and I highly recommend it! This garment has been with my children for years, in winter under other pants, on ski trips, and especially as pajamas! It's an essential first layer that will influence all the other layers of clothing.

• 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.

Related products

For over half a century, Cosilana has followed a simple principle: not to correct the fiber, but to preserve it. At a time when industrial treatments have become widespread to adapt textiles to modern habits, the brand has chosen to continue manufacturing differently, preserving materials as they naturally function.

Based in Baden-Württemberg, Germany, production remains closely tied to regional textile expertise. Organic fibers are processed using controlled methods to preserve their original qualities, while GOTS certification regulates both the environment and manufacturing conditions.

Cosilana hasn't evolved towards faster fashion, but towards more sustainable consistency: producing fewer technical effects and greater stability over time. The garment isn't designed to follow a single season, but to accompany its daily wear for a long time.

All Cosilana products