The EN 12934 norm has been a standard for down at Fja-Oeyen for many years. Fja-Oeyen was even at the cradle of its official recognition.
September 30, 2023 by
Kris | Fja-Oeyen

Because there are quite a few misunderstandings about down and because consumers still have little guidance on the various classes of down quality, a proposal has been worked out concerning down and plume.

Duvets are assessed according to a new European standard, EN 12934.
Down and feather materials used as stuffing for blankets have imposed a form of labelling that includes the following points:​  nogal wat misverstanden bestaan en omdat consumenten over de verschillende klassen van donskwaliteit tot op vandaag weinig houvast hebben, werd er een voorstel uitgewerkt betreffende dons en pluim.

Donsdekens worden beoordeeld aan de hand van een nieuwe Europese norm, de EN 12934.
Dons- en vedermaterialen die gebruikt worden als vulling voor dekens, hebben een vorm van etikettering opgelegd, die de volgende punten vermeldt:

  • the colour of the filling material
  • the origin
  • new goods
  • fowl species
  • a subdivision into classes I to V
  • ratio in down/feathers expressed as a percentage of the number and NOT as a percentage of the volume

Fja-Oeyen, together with its suppliers and in cooperation with the agriculture department of the Hungarian University in Gödelö, has worked to finally have the European law against animal cruelty during live picking adopted in May 2000. What's more, Fja-Oeyen even advocates a further subdivision of these classes into down percentages of 0% to 100%, a subdivision into filling power, covering, filling weight and origin!


And with that Fja-Oeyen distinguishes itself once again from many other Belgian and foreign down brands. A case that cannot be changed by any other standard, because Fja-Oeyen only uses beautiful flakes of down from healthy geese bred in freedom from the coldest regions of North and North-East Europe, Canada, Falklands ..., takes care to use only new goods and fills the blankets with the highest percentage of down in the right way to provide quality blankets with a high insulation value and resilience and a minimum weight. As it is not a mass-produced product, but individual duvets, each duvet is inspected by a connoisseur's eye. In this way, duvets are created which, if properly cared for, guarantee lifelong healthy sleeping comfort!​  ​


The colour gives no real indication about the quality. However, it can indicate that the upholstery ( tick) is not too heavy. If one fills an ultra light white cover with a grey down, one can see the flakes through it.

The origin of the filling material is of course an indication of its country of origin. This can be an indication of whether the filling actually comes from a country with cold winters or not (and the colder the winter, the more voluminous the down).

However, the origin of the down does not give any indication of quality. A sick (read thick) liver, produces sick geese, so also bad down. Regular checks by universities (such as Gödelö in Hungary) contribute to the health of these animals, which can be further bred. Labour-intensive working methods, which produce a beautiful down, but which are obviously more expensive. As a manufacturer, it is important to get that 5% high quality down! Trust is important. And that is built up with care. As Fja-Oeyen did, during four generations of down processing!

The mention 'new goods' refers to the following: down and feathers last a long, very long time. There are numerous factories (e.g. in France) where used down (couché) is given a second life or mixed with new down. It goes without saying that this down can be put on the market cheaply. But the down will quickly lose its volume and no longer offer good insulation. Not to mention hygiene aspects. Fja-Oeyen only uses new goods in her down duvets.

You can recognize the down by the species. Goose down is normally better than duck down. But the origin plays a role here. A wild duck from the far north will, after a harsh winter, produce a thicker down than a goose from France, bred for its liver.


Class I: is only awarded to duvets with at least 90% of the specified filling (goose or duck) and a maximum of 5% small downy hairs.
Certainly no chickens or other plumage, certainly no reused but only new goods.

Class II: here reusable goods, feathers such as poultry and even synthetic material may be used up to 15%.

Class III: the filling component other than goose or duck down may exceed 15%.

Class IV and V: these are completely different fillings that have no relation to down or feathers.

The percentage ratio of down to feathers indicates the extra weight that has to be filled with in order to obtain the same thickness. As a layman one does not notice this at first sight, and when one notices it it is often too late. That is why the extension to the European standard; i.e. the mandatory indication of the percentage of down with a maximum of 90%... up to now. Fja-Oeyen still strives to make a breakdown up to the super quality of 100%.

Terms and Conditions

Klasse I: wordt enkel toegekend aan donsdekens met minstens 90% van de opgegeven vulling (gans of eend) en maximaal 5% kleine donshaartjes.
Zeker géén kippen of ander pluimage, zeker geen herbruikte maar uitsluitend nieuwe waren.

Klasse II: hier mogen herbruikte waren, pluimage zoals van hoenders en zelfs synthetisch materiaal tot 15% worden meeverwerkt.

Klasse III: het vulaandeel anders dan ganzen- of eendendons mag meer dan 15% bedragen.

Klasse IV en V: het betreft volledig andere vullingen die niets meer met dons of veren te maken hebben.

De procentuele verhouding tussen dons en veren wijst op het gewicht dat men meer moet vullen om dezelfde dikte te bekomen. Als leek merkt men dat op het eerste zicht niet, en wanneer men het merkt is het veelal te laat. Daarom de uitbreiding aan de Europese norm; nl. het verplicht vermelden van het percentage dons met een tot op heden maximaal van 90%. En hier streeft Fja-Oeyen er nog naar om een uitsplitsing te maken naar de super kwaliteit tot 100%.



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