Preferred & Prohibited Materials

Our preferred and prohibited materials lists guide us to create collections that are as time-lasting and sustainable as possible, while still in line with our vision of exploring the performance of masculinities.

In accordance to our Sustainability Standards, minimum 50% of each collections materials are either certified sustainable, new generation sustainable materials, upcycled, recycled or made of deadstock. The rest are almost entirely plant fibers, regenerated fibers, animal fibers or other fibers applicable for circular material technologies and recycling. Our prohibited materials are in accordance to the requirements of the EU REACH Directive.

Please note that the contents of this page are a continuous work in progress. We regularly research and re-examine our preferred and prohibited materials lists based on latest information we are able to gather from industry professionals. If you would like to help us be better and comment this list, please don't hesitate to email us at


Preferred Materials 

  • GRS certified recycled materials
  • Regenerated materials of recycled origin
  • More sustainable regenerated materials such as EcoVero™, Lyocell or Tencel
  • GOTS certified organic materials
  • Other certified sustainable materials
  • Naturally dyed or printed materials
  • Monomaterials, as they are more easily recycled as mixed materials
  • Vegetable tanned leather


Accepted Materials

  • Plant based materials such as cotton or linen. For cotton we require a minimum of BCI certification, however these will be phased out for GOTS certified cotton by 2030
  • Regenerated cellulose based materials such as viscose or modal
  • Mixed materials that are 100% cellulose based
  • Materials made from animal fibers such as wool and silk
  • Leather tanned in the EU


Prohibited Materials

When inspecting this list you'll notice that we have prohibited materials that have less than 70% of a single fiber. This is based on information we have received from industry professionals as the current aspect ratio limit (70% recyclable fibers / 30% other fibers) that can still be mechanically or chemically separated when fabrics are recycled to new virgin materials. Our prohibited materials are:

  • Fur
  • Angora wool
  • Mulesed wool
  • Exotic animal leather
  • Leather tanned outside the EU
  • Acrylic
  • Polyurethane, unless used as a coating for waterproofing purposes
  • Non-recycled down
  • Non-recycled synthetic materials in larger quantities than 30%*
  • Materials with less than 70% of a single fiber (unless 100% of the fibers are cellulose based)*
  • Any material not in accordance to the requirements of the EU REACH Directive

 *Not applicable for limited amounts of showpiece items what will not be bulk produced. 

This page was last updated April 15th 2024