When it comes to improving processes, we highly focus on the materials our products are made of. In 2018, we started to add what today is called our ‘preferred fibers’, consisting of recycled, organic, resource efficient and certified fibers. However, we still use a high level of traditional fibers. 

We still have much to improve, but we truly believe this is an area where mbyM can evolve and make a difference.   

As an important step on our journey, we have developed a fiber guide presenting fiber materials in two main categories (preferred and distance) including four colored sub-categories. The fiber guide is a tool that works as design-guidance to choose more responsible fiber materials based on environmental, climate, social and ethical impacts as well as animal welfare.

We strive to decrease the usage of ‘distance’ fibers and instead replace them with an increasing number of ‘preferred’ fibers for future collections. The preferred fibers cover both fibers we already use, and new and innovative fibers we curiously look into. 

The fiber guide, which we always ensure to be completely aligned with our policies, is updated regularly as we gain more knowledge about new and innovative materials and processes. 

See mbyM fiber guide


As part of our annual fiber mapping, we measure the fibers in weight of the total number of products purchased in the current year. Below, the percentage distribution of fiber in 2023 is illustrated. Neither the fiber overview nor the fiber mapping includes fibers used in lining, filling and trims as well as product samples.

The highlighted fibers are part of our ‘preferred fibers’.

The mbyM preferred fibers

As a fashion brand
, we love to gain knowledge about new fibers and their extraction processes, and to test the available options. The listed fibers are those of our preferred fibers that we use for our collections so far.



TENCEL™ Lyocell

TENCEL™ Lyocell fibers are made of wood pulp form certified and controlled wood partly from eucalyptus trees. The pulp is dissolved in a non-toxic organic solvent, which is recycled in a closed-loop system meaning that up to 99% of water and solvent are recycled and used again. TENCEL™ branded Lyocell fibers are certified with the EU Ecolabel for textile products.  

TENCEL ™ is a trademark of Lenzing AG.




TENCEL™ Modal fibers are derived from sustainable wood, mainly beech wood, and are produced in an environmentally responsible integrated pulp-to-fiber process, using renewable energy and recovers co-products from remaining components. TENCEL™ branded Modal fibers are certified with the EU Ecolabel for textiles products.   

TENCEL™ is a trademark of Lenzing AG.




LENZING™ ECOVERO™  Viscose fibres are derived from renewable wood pulp from sustainably managed forests. LENZING™ ECOVERO™ Viscose are produced with an eco-responsible production process generating up to 50% lower CO2-emissions and water impact compared to generic viscose. LENZING™ ECOVERO™ branded Viscose fibres are certified with the EU Ecolabel for textile products.  

LENZING™ and ECOVERO™ are trademarks of Lenzing AG.



Organic Cotton

Organic cotton is grown following the standards of organic farming. Cotton of organic origin are excluded from pesticides, fertilizers, herbicides and over 1000 toxic substances harmful to the environment and to human health, substances that are commonly used both in the cultivation of cotton and in subsequent steps (spinning, weaving, dyeing, etc.). Since pesticides are not used for cultivation of organic cotton, the soil has more natural nutrition meaning less water is needed over time.



Recycled Polyester

We use recycled polyester (mainly post-consumer recycled polyester) derived from either recycled polyester garments and rPET bottles. For garments, the fibers are obtained by melting down the shredded polyester garments and re-spinning the mass into new polyester fibers. For bottles, the filament fibers are obtained by shredding the bottles into flakes, melting the flakes down and reforming them into pellets. The pellets afterwards go though a compounding process to become filaments. The extraction of recycled polyester fibers reduces both water and energy consumption, but it does not eliminate the issues regarding microplastics released into the water, when washed.



Recycled Nylon 

Recycled nylon is made of existing nylon materials that have been broken into plastic chips, melted down and re-spun into new fibers. Though recycled nylon is produced the same way as virgin nylon, it is a better alternative, as it reduces the demand for new nylon to be produced and diverts existing nylon from ending up in the ocean or on landfills.



Recycled down

Recycled down derives from used goods such as clothing, bedding etc. After use, these consumer waste products are collected, and the outer surface is cut to collect the down. The down is sorted, then washed and cleaned to remove contaminants and afterwards sterilized and dried while possible oil components are controlled.



Recycled wool

Recycled wool is obtained by shredding wool textiles and turning them into raw fibers. The raw fiber pulp is processed in a carding machine turning the pulp into a continuous and homogeneous web, which is then separated and spun into new yarn. Besides reducing waste, recycled wool often limits chemical use for dyeing, as the wool fibers are already dyed. However, according to the process of shredding the material, the quality can vary.


mbyM_Maenka-M_Leolani Print