Cosilana

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

Cosilana - Baby long-sleeved T-shirt, wool-silk-cotton

Bleu / 50/56 cm

19,90 EUR

Cosilana - Baby long-sleeved T-shirt, wool-silk-cotton

Cosilana

Cosilana - Baby long-sleeved T-shirt, wool-silk-cotton

19,90 EUR

In stock

ColorBleu

Size 50/56 cm 62/68 cm 74/80 cm 86/92 cm 98/104 cm

Fonctionnement de la précommande :

○ FIN DE PRÉCOMMANDE : SAMEDI 22 août 2026 à minuit.
○ Paiement souple: PayPal 4x et Klarna 3x disponibles.
○ Vous choisissez librement les articles dont vous avez besoin parmi les options proposées.
○ À la fin de la précommande annoncée, la commande est transmise à la marque.
○ La réception des produits en boutique est estimée FIN SEPTEMBRE - COURANT OCTOBRE.
○ Important : Le délai de réception indiqué est donné à titre indicatif. Il peut arriver que le fabricant ne dispose pas de l'ensemble des articles commandés en stock et lance une fabrication complémentaire. Dans ce cas, le délai peut être prolongé d'environ 3 à 4 semaines. Afin de limiter l'impact environnemental et les frais logistiques, les commandes ne seront pas expédiées en plusieurs envois, même si leur montant permettrait de bénéficier de plusieurs expéditions offertes. La commande est envoyée en une seule fois, dès réception de l'ensemble des articles.
○ L’expédition chez vous intervient sous 3 jours ouvrés après leur arrivée.
○ Plus de détails : lire ici.

You are looking for:

A natural thermoregulating garment, but softer than pure wool, if your child still finds it slightly irritating?
A T-shirt for very sensitive or reactive skin, with breathable and comfortable natural fibers?
A thin, discreet, and thermoregulating second skin, to be worn all year round?
A garment that helps manage the child's perspiration, especially when going indoors/outdoors, to avoid the sensation of cold on a damp back?

Description

Long-sleeved T-shirt in organic merino wool-silk-cotton, from the German ecological brand Cosilana.

An extremely soft, thin, and warm T-shirt, designed to be worn directly on the skin. Ideal as thermal underwear in winter, as pajamas, or as a garment worn alone for the rest of the year.

Natural second skin: thin, enveloping, without compression.
Natural thermoregulation: helps keep skin dry and comfortable.
Envelope neckline for easy dressing.
Versatile: thermal underwear, pajamas or bodysuit worn alone.

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

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

The first layer is the most important. It is in direct contact with the skin and conditions the entire body's 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 which 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 textile cocoon, respectful and soothing, which protects the skin from friction and external aggressions. On the skin, silk reproduces this cocoon sensation: an incredibly smooth, enveloping and soothing touch, which 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 detail (wool–silk–cotton):

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

Colors:

Grey, blue, heather green, pale pink, heather yellow, heather burgundy, heather plum, ecru

Available sizes:

50/56 cm, 62/68 cm, 74/80 cm, 86/92 cm, 98/104 cm

Understanding Cosilana sizes

At Cosilana, each size is designed to last until the next size. Example: a size 86/92 is designed to cover the entire growth period up to the next size, i.e., approximately from 86 to 98 cm (and often beyond depending on the child's build).

Therefore, it is not a garment strictly limited to 86-92 cm, but an evolving size designed to accompany growth over a prolonged 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.

• Why add cotton to this mixture?
The cotton stabilizes the knit and makes care easier. The garment retains the softness and breathability of wool and silk while being simpler to wash.

• Is it still thermoregulating?
Yes. The wool-silk blend remains the primary component in thermal performance: the garment regulates temperature and limits the feeling of dampness. The effect is simply a little softer than with pure wool.

• Should it be washed more often?
Yes, a little more often than wool-silk, but unlike pure cotton or synthetic materials, this garment can be worn several times (for example, at my house: 5 times on average).

• Is it less efficient than a garment made of pure wool?
The thermal regulation is slightly gentler, but this makes the garment more versatile and easy to care for on a daily basis.

• 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 bodysuit is thin, but functions as a basic thermal layer.

• Is it worn alone or under another garment?
Both are possible:
- like a t-shirt on its own, all year round, or as pyjamas
- as a first layer under another top or a jumpsuit/sleeping bag.

• Is it suitable for sensitive skin (eczema, reactive skin)?
Absolutely!
Fine wool and silk are breathable natural fibers, often appreciated by those with sensitive skin, as evidenced by the improvements my clients have noticed. Cotton also adds softness.
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 62/68 can be worn as long as the child measures between 62 cm and approximately 74 cm (the next size up).
and not only between 62 cm and 68 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! 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