SØSTER

materials

Being a sustainable brand means working with new and evolving materials, challenging traditional ideas but also investing in quality. 

At SØSTER STUDIO, we believe in the concept of circular economy and closed-loop processes. We dedicate our innovative spirit to find the best possible materials for our collections.

We believe that the origin of our products, as well as the stories behind them, should be just as beautiful as the garment itself. For us it is important to reveal where things come from.
ALPACA WOOL
Supplier Incalpaca.
Origin Peru.
Production Peru.
There are nearly 3 million Alpacas in Peru, representing about 80 percent of the entire world’s population. Most of these animals belong to small, local herdsmen who continue to employ humane breeding and shearing techniques which have been passed down for generations.

Alpacas do not bother trees and are generally considered to be of 'low-impact' to the environment, when compared to other herding animals such as sheep or goats.

This fiber is stronger and warmer than sheep's wool and is second only to mohair in strength. It equals or surpasses typical thermic characteristics of both cashmere and mohair.

Alpaca fiber is naturally hypoallergenic and less irritating to the skin. It’s an oilier fiber as well. Woven alpaca is water-resistant and highly breathable. It is washable, shrinks very little, and as is free of lanolin. It tends to resist dust. It's also is non-flammable and occurs naturally in 22 colors.

Due to these desirable characteristics, and the added difficulty of working the slippery fibers, products made from alpaca are generally more valuable than those made from sheep's wool.

It is a natural, renewable, biodegradable and durable fiber. And the animals are usually shorn once a year.

Supplier information
Created and sponsors the ecological patrol, a non-profit Civil Association that has been working since 2011 managing and executing actions for the preservation and improvement of the environment, as well as awareness-raising campaigns in favour of a responsible and active society.

Sponsors the experimental farm of Pacomarca; an initiative that seeks to benefit all the people involved within the Alpaca´s chain of production, especially the thousands of peasant families that make a living of this in the Peruvian highlands.

Garments with this material
Oversized Alpaca Coat.
HEMP AND ORGANIC COTTON WARP
Supplier Bysshe partnership.
Origin UK.
Production UK.
The hemp and cotton blends naturally crease, softening over time. Natural fibres may give colour variations between batches and give the fabric a flecked effect throughout with slub and knot. These characteristics do not affect the durability.

Supplier information
Bysshe Partnership is an independent company producing high quality fabrics in the traditional textile heartland of the British Isles. They use natural and organic fibres, sourcing yarns from the UK and Europe, to provide a regional network of production where it is possible to oversee the entire process from seed to final creation. They work with some of the last remaining textile mills in the UK. Most of their weaving takes place in Lancashire, before the rolls travel a short distance over the hill to be finished in Yorkshire. They ensure the highest quality at the lowest environmental cost, developing fabrics for a sustainable future.

Bysshe work with certified organic cotton from within the EU as they believe it is important to protect the environment, reduce agricultural dependency on the petrochemical industry and ensure the yarns have proof of origin.

Garments with this material
Hemp Boilersuit, Pilot Boilersuit.
BRUSHED RECYCLED DENIM
Supplier Enschede textiles.
Origin Netherlands.
Production Netherlands.
Supplier information
Enschede Textielstad is a small-scale industrial weaving mill in the Netherlands. In their cloth they use sustainable and/or recycled fibers such as recycled denim, recycled cotton (both post-industrial waste and post-consumer material), recycled PET, Tencel, hemp and flax.

Garments with this material
Blazer With Detachable Sleeves, Brushed Denim Shorts.
TENCEL
Supplier Toyoshima.
Origin Japan.
Production Japan.
Tencel ™ cellolusic fibers is derived from sustainable wood sources - natural forests and sustainably managed plantations. Wood and pulp used by the Lenzing Group is harvested from certified and controlled sources. Tencel ™ modal fibers are mainly manufactured from the renewable source of raw material beech wood, sourced from sustainable forests in Austria and neighbouring countries. They have environmentally responsible closed loop production process, which transforms wood pulp into cellulosic fibers with high resource efficiency and low ecological impact. This solvent-spinning process recycles process water and reuses the solvent at a recovery rate of more than 99%. Lenzing strives to safeguard resources for future generations by the use of renewable energy and by the recovery of process chemicals.

Soft to the skin, smooth to the touch, luxurious in shine and flow—they caress the senses. And convince minds with their exceptional capacity for thermal regulation and moisture absorption. 

It’s easy to identify TENCEL™ fibers You just need to discern their exceptional, naturally soft, and smooth feel. With our Eco Soft technology, fabrics create a pleasant, almost soothing cool feeling on the skin contributed by the special attributes of TENCEL™ fibers.

The smooth surface of TENCEL™ Lyocell fibers allows color dyes to penetrate deeply into the fiber structure, resulting in impressive color brilliance. The possibility to dye our TENCEL™ Modal fibers during the fiber production process means garments made by these fibers are less prone to fade, even after repeated washing.

One of the most outstanding qualities of TENCEL™ fibers is the ability to enhance breathability. The smooth fiber surface absorbs and releases moisture efficiently therefore supports the body’s natural thermal regulation.

Environmental or social certifications
USDA Certified Biobased Product Label.

Garments with this material
Tencel wide-leg trousers, Double-Breasted Tencel Blazer.
LOCAL SHEEP AND LAMB WOOL
Supplier Lofoten Wool.
Origin Norway.
Production Norway.
Natural and raw wool from happy sheeps and lambs. Unbleached.

Supplier information
Lofoten wool at Vestvågøya and Flakstad in Lofoten provides wool from a small farm with 27 wild happy sheeps, hand made by the owner Ragnhild. Production is of high quality craftmanship. The over 100 year old machines are still in operation. Throughout all the joints there are handcraft and diligence in focus. The production of yarn and wool in Hillesvåg Ullvarefabrikk is the closest you will find to handcraft in a wool mill. The yarn and the wool are produced by people who touch the wool and the thread.

Garments with this material
Cut Out Wool Sweater.
SILK AND MERINO BLEND
Supplier Manos del Uruguay.
Origin Uruguay.
Production Uruguay.
Supplier information
Manos del Uruguay was founded, to give Uruguay's rural women jobs, that would mean, not just an income, but also an opportunity to personally develop and gain independence, keeping their roots and traditions, close to their community and families.

All of their yarns are hand dyed. The artisans use big pots heated by wood kettles, creating small batches of wonderful colors. Their yarn colors are bright and wild, full of nuances and variations. No two skeins are the same, each one is unique, a testimony of a particular moment.

Keeping the traditional hand spinning skills alive is very important to them and it allows them to create unique, beautiful yarns.

The artisans are the owners of the company and Manos ´ profits are shared among the cooperatives or re-invested in the organization. The cooperatives have strong bonds with the communities where they are inserted, with a positive impact in society and families.

Manos del Uruguay is a proud member of the World Fair Trade Organization, WFTO, since 2009. Fair trade supports the sustainable development of small producers, by offering better commercial conditions and protecting their rights.

Environmental or social certifications
WFTO member.

Garments with this material
Cropped Knitted Top, Knitted Trousers.
ORGANIC COTTON
Supplier Orta Anadolu/Organic textile company.
Origin Turkey/India.
Production Turkey/Wales.
Organic cotton eliminates the use of toxic and persistent chemicals, improves soil health and increases water conservation. All of which is better for environment and for farmers and their communities. Organic cotton farming also supports biodiversity and healthy ecosystems, and helps to mitigate climate change by increasing the ability of soils to sequester carbon.

Supplier information (Orta Anadolu)
Read about their sustainability initiatives here.

Environmental or social certifications (Orta Anadolu)
Fairtrade Certificate, Global Organic Textile Standard, Global Recycled Standard, Organic Cotton Standard.

Supplier information (Organic textile company)
Organic textile company use GOTS certified mills in India and Turkey. The cotton mill in Turkey says The origin of cotton is Aegean region of Turkey (Near İzmir). Organic textile company always obtain our own cotton from contracted farmers. Their spinning house is in Denizli. Depending on the quality or lead times they may use different knitting and dying houses placed in Denizli, İzmir or İstanbul. All facilities have to certificated otherwise it is not possible to give GOTS certificate to the final items (fabric or clothes). All of the facilities (Farms, spinning, knitting or even warehouse where the finished fabrics are controlled and packed) have to carry the responsibilities that certification requires. The certification is made by non-profit certification companies like ICEA or Control union.

Organic textile company have a small charity called 'Loom.'  Organic textile company return some of their profits to help the weavers they work with in Kerela. They distribute ten percent of profits to staff and support local initiatives and interest free loans to local businesses.

Garments with this material
Cut Up Jeans, Wide Leg Jeans.
LOW IMPACT APPLE LEATHER
Supplier Frumat.
Origin Italy.
Production Italy.
Pellemela is a leather substitute made of 50% recycled apple fibre and 50% polyurethane. It was developed by Italian company Frumat that observed that every year the Tyrol region, one of the worlds largest apple-producing regions, is faced with significant amount of food-production waste. To reinvest this waste in an additional economic production, the company developed a new raw material.

This sustainable material is compostable, cruelty-free and recyclable.

Garments with this material
Apple Leather Jacket. (The worlds first luxury jacket made out of apples).
CLOUDWOOL
Supplier Dobbelhaus.
Origin UK.
Production UK.
A sustainable material innovation made from 100% sheeps wool. Natural, recyclable and biodegradedable. Doppelhaus create sustainable fabrics with low environmental impact utilising innovative felting technology and 100% UK wool reducing waste, energy and costs.

Lighter and more flexible than conventional felt, Cloudwool® is highly breathable, thermally and acoustically insulating and therefore suited to a wide variety of applications. Cloudwool® has no directional grain line, making it efficient to cut and prevents it from fraying. Cloudwool® is a fabric for the Circular Economy Natural, Recyclable and Biodegradable.

Supplier information
Their innovative manufacturing process (patent- pending) combines ethically sourced British wool with German-engineered technology to create Cloudwool®. Nowadays European wool is struggling to compete in the global market and farmers often make a loss from the sale of their wool. Doppelhaus aims to increase demand for local wool through innovative textile design. Their transparent, local production chain is more efficient and ecological, involving far fewer stages than conventional textile production.

Garments with this material
Wool Wrap Skirt.
LIGHTWEIGHT WOOL
Supplier Ecological textiles.
Origin Netherlands.
Production UK.
Supplier information
Ecological Textiles offers fabrics, yarns and  dyes that are manufactured and processed in a sustainable way. They almost exclusively work with natural materials such as cotton, wool, hemp, linen and silk, the only exception being tencel, a sustainably manufactured viscose. Ecological Textiles stands for sustainable production and only uses organic, GOTS certified cotton.

Environmental or social certifications
GOTS-certified.

Garments with this material
Lightweight Wool Shirt, Lightweight Wool Dress.
TENCEL AND POST CONSUMER COTTON WASTE
Supplier Ecological textiles.
Origin Netherlands.
Production UK.
The most logical, and exciting, next step is to reuse what we already have. To turn ‘waste’ materials into something more luxurious to create a truly a truly circular, restorative system.

Supplier information
Ecological Textiles offers fabrics, yarns and  dyes that are manufactured and processed in a sustainable way. They almost exclusively work with natural materials such as cotton, wool, hemp, linen and silk, the only exception being tencel, a sustainably manufactured viscose. Ecological Textiles stands for sustainable production and only uses organic, GOTS certified cotton.

Environmental or social certifications
GOTS-certified.

Garments with this material
Extra Long Gloves, Knee-High Socks.
ECO BABY WOOL
Supplier Dale Garn.
Origin Italy.
Production Italy.
100% Organic wool GOTS and ICEA-certified yarn.

Supplier information
Dale Pure ECO is an organic and ethical yarn-concept for people who care about the environment, animal welfare and health.

Environmental or social certifications
GOTS and ICEA-certified.

Garments with this material
High Neck Sweater With Cuffed Sleeves.
CUPRO
Supplier Toyoshima.
Origin Japan.
Production Japan.
Cupro fiber itself is derived from cotton linter, which is the very fine, soft material that sticks to the cottonseeds and is left behind after the cotton has been ginned. Usually, these fibers are discarded, however, they are now recycled for the production of Cupro. It is a cellulose fiber and has a much more luxurious feel than one would expect from the cotton plant- it drapes beautifully and feels similar to rayon or silk.

We use Cupro in our lining.

Garments with this material
Oversized Alpaca Coat.
Being a sustainable brand means working with new and evolving materials, challenging traditional ideas but also investing in quality. 

At SØSTER STUDIO, we believe in the concept of circular economy and closed-loop processes. We dedicate our innovative spirit to find the best possible materials for our collections.

We believe that the origin of our products, as well as the stories behind them, should be just as beautiful as the garment itself. For us it is important to reveal where things come from.
ALPACA WOOL
Supplier Incalpaca. Origin Peru. Production Peru.
There are nearly 3 million Alpacas in Peru, representing about 80 percent of the entire world’s population. Most of these animals belong to small, local herdsmen who continue to employ humane breeding and shearing techniques which have been passed down for generations.

Alpacas do not bother trees and are generally considered to be of 'low-impact' to the environment, when compared to other herding animals such as sheep or goats.

This fiber is stronger and warmer than sheep's wool and is second only to mohair in strength. It equals or surpasses typical thermic characteristics of both cashmere and mohair.

Alpaca fiber is naturally hypoallergenic and less irritating to the skin. It’s an oilier fiber as well. Woven alpaca is water-resistant and highly breathable. It is washable, shrinks very little, and as is free of lanolin. It tends to resist dust. It's also is non-flammable and occurs naturally in 22 colors.

Due to these desirable characteristics, and the added difficulty of working the slippery fibers, products made from alpaca are generally more valuable than those made from sheep's wool.

It is a natural, renewable, biodegradable and durable fiber. And the animals are usually shorn once a year.

Supplier information

Created and sponsors the ecological patrol, a non-profit Civil Association that has been working since 2011 managing and executing actions for the preservation and improvement of the environment, as well as awareness-raising campaigns in favour of a responsible and active society.

Sponsors the experimental farm of Pacomarca; an initiative that seeks to benefit all the people involved within the Alpaca´s chain of production, especially the thousands of peasant families that make a living of this in the Peruvian highlands.


Garments with this material
Oversized Alpaca Coat.

HEMP AND ORGANIC COTTON WARP
Supplier Bysshe partnership. Origin UK. Production UK.
The hemp and cotton blends naturally crease, softening over time. Natural fibres may give colour variations between batches and give the fabric a flecked effect throughout with slub and knot. These characteristics do not affect the durability.

Supplier information
Bysshe Partnership is an independent company producing high quality fabrics in the traditional textile heartland of the British Isles. They use natural and organic fibres, sourcing yarns from the UK and Europe, to provide a regional network of production where it is possible to oversee the entire process from seed to final creation. They work with some of the last remaining textile mills in the UK. Most of their weaving takes place in Lancashire, before the rolls travel a short distance over the hill to be finished in Yorkshire. They ensure the highest quality at the lowest environmental cost, developing fabrics for a sustainable future.

Bysshe work with certified organic cotton from within the EU as they believe it is important to protect the environment, reduce agricultural dependency on the petrochemical industry and ensure the yarns have proof of origin.


Garments with this material
Hemp Boilersuit, Pilot Boilersuit.
BRUSHED RECYCLED DENIM
Supplier Enschede textiles. Origin Netherlands. Production Netherlands.
Supplier information
Enschede Textielstad is a small-scale industrial weaving mill in the Netherlands. In their cloth they use sustainable and/or recycled fibers such as recycled denim, recycled cotton (both post-industrial waste and post-consumer material), recycled PET, Tencel, hemp and flax.

Garments with this material
Blazer With Detachable Sleeves, Brushed Denim Shorts.


TENCEL
Supplier Toyoshima. Origin Japan. Production Japan.
Tencel ™ cellolusic fibers is derived from sustainable wood sources - natural forests and sustainably managed plantations. Wood and pulp used by the Lenzing Group is harvested from certified and controlled sources. Tencel ™ modal fibers are mainly manufactured from the renewable source of raw material beech wood, sourced from sustainable forests in Austria and neighbouring countries. They have environmentally responsible closed loop production process, which transforms wood pulp into cellulosic fibers with high resource efficiency and low ecological impact. This solvent-spinning process recycles process water and reuses the solvent at a recovery rate of more than 99%. Lenzing strives to safeguard resources for future generations by the use of renewable energy and by the recovery of process chemicals.

Soft to the skin, smooth to the touch, luxurious in shine and flow—they caress the senses. And convince minds with their exceptional capacity for thermal regulation and moisture absorption. 

It’s easy to identify TENCEL™ fibers You just need to discern their exceptional, naturally soft, and smooth feel. With our Eco Soft technology, fabrics create a pleasant, almost soothing cool feeling on the skin contributed by the special attributes of TENCEL™ fibers.

The smooth surface of TENCEL™ Lyocell fibers allows color dyes to penetrate deeply into the fiber structure, resulting in impressive color brilliance. The possibility to dye our TENCEL™ Modal fibers during the fiber production process means garments made by these fibers are less prone to fade, even after repeated washing.

One of the most outstanding qualities of TENCEL™ fibers is the ability to enhance breathability. The smooth fiber surface absorbs and releases moisture efficiently therefore supports the body’s natural thermal regulation.

Environmental or social certifications
USDA Certified Biobased Product Label.

Garments with this material
Tencel wide-leg trousers, Double-Breasted Tencel Blazer.


LOCAL SHEEP AND LAMB WOOL
Supplier Lofoten Wool. Origin Norway. Production Norway.
Natural and raw wool from happy sheeps and lambs. Unbleached.

Supplier information
Lofoten wool at Vestvågøya and Flakstad in Lofoten provides wool from a small farm with 27 wild happy sheeps, hand made by the owner Ragnhild. Production is of high quality craftmanship. The over 100 year old machines are still in operation. Throughout all the joints there are handcraft and diligence in focus. The production of yarn and wool in Hillesvåg Ullvarefabrikk is the closest you will find to handcraft in a wool mill. The yarn and the wool are produced by people who touch the wool and the thread.

Garments with this material
Cut Out Wool Sweater.


SILK AND MERINO BLEND
Supplier Manos del Uruguay. Origin Uruguay. Production Uruguay.
Supplier information
Manos del Uruguay was founded, to give Uruguay's rural women jobs, that would mean, not just an income, but also an opportunity to personally develop and gain independence, keeping their roots and traditions, close to their community and families.

All of their yarns are hand dyed. The artisans use big pots heated by wood kettles, creating small batches of wonderful colors. Their yarn colors are bright and wild, full of nuances and variations. No two skeins are the same, each one is unique, a testimony of a particular moment.

Keeping the traditional hand spinning skills alive is very important to them and it allows them to create unique, beautiful yarns.

The artisans are the owners of the company and Manos ´ profits are shared among the cooperatives or re-invested in the organization. The cooperatives have strong bonds with the communities where they are inserted, with a positive impact in society and families.

Manos del Uruguay is a proud member of the World Fair Trade Organization, WFTO, since 2009. Fair trade supports the sustainable development of small producers, by offering better commercial conditions and protecting their rights.

Environmental or social certifications
WFTO member.

Garments with this material
Cropped Knitted Top, Knitted Trousers.


ORGANIC COTTON
Supplier Orta Anadolu/Organic textile company. Origin Turkey/India. Production Turkey/Wales.
Organic cotton eliminates the use of toxic and persistent chemicals, improves soil health and increases water conservation. All of which is better for environment and for farmers and their communities. Organic cotton farming also supports biodiversity and healthy ecosystems, and helps to mitigate climate change by increasing the ability of soils to sequester carbon.

Supplier information (Orta Anadolu)
Read about their sustainability initiatives here.

Environmental or social certifications(Orta Anadolu)
Fairtrade Certificate, Global Organic Textile Standard, Global Recycled Standard, Organic Cotton Standard.

Supplier information (Organic textile company)
Organic textile company use GOTS certified mills in India and Turkey. The cotton mill in Turkey says The origin of cotton is Aegean region of Turkey (Near İzmir). Organic textile company always obtain our own cotton from contracted farmers. Their spinning house is in Denizli. Depending on the quality or lead times they may use different knitting and dying houses placed in Denizli, İzmir or İstanbul. All facilities have to certificated otherwise it is not possible to give GOTS certificate to the final items (fabric or clothes). All of the facilities (Farms, spinning, knitting or even warehouse where the finished fabrics are controlled and packed) have to carry the responsibilities that certification requires. The certification is made by non-profit certification companies like ICEA or Control union.

Organic textile company have a small charity called 'Loom.'  Organic textile company return some of their profits to help the weavers they work with in Kerela. They distribute ten percent of profits to staff and support local initiatives and interest free loans to local businesses.

Garments with this material
Cut Up Jeans, Wide Leg Jeans.


LOW IMPACT APPLE LEATHER
Supplier Frumat. Origin Italy. Production Italy.
Pellemela is a leather substitute made of 50% recycled apple fibre and 50% polyurethane. It was developed by Italian company Frumat that observed that every year the Tyrol region, one of the worlds largest apple-producing regions, is faced with significant amount of food-production waste. To reinvest this waste in an additional economic production, the company developed a new raw material.

This sustainable material is compostable, cruelty-free and recyclable.

Garments with this material
Apple Leather Jacket. (The worlds first luxury jacket made out of apples).


CLOUDWOOL
Supplier Dobbelhaus. Origin UK. Production UK.
A sustainable material innovation made from 100% sheeps wool. Natural, recyclable and biodegradedable. Doppelhaus create sustainable fabrics with low environmental impact utilising innovative felting technology and 100% UK wool reducing waste, energy and costs.

Lighter and more flexible than conventional felt, Cloudwool® is highly breathable, thermally and acoustically insulating and therefore suited to a wide variety of applications. Cloudwool® has no directional grain line, making it efficient to cut and prevents it from fraying. Cloudwool® is a fabric for the Circular Economy Natural, Recyclable and Biodegradable.

Supplier information
Their innovative manufacturing process (patent- pending) combines ethically sourced British wool with German-engineered technology to create Cloudwool®. Nowadays European wool is struggling to compete in the global market and farmers often make a loss from the sale of their wool. Doppelhaus aims to increase demand for local wool through innovative textile design. Their transparent, local production chain is more efficient and ecological, involving far fewer stages than conventional textile production.

Garments with this material
Wool Wrap Skirt.


LIGHTWEIGHT WOOL
Supplier Ecological textiles. Origin Netherlands. Production UK.
Supplier information
Ecological Textiles offers fabrics, yarns and  dyes that are manufactured and processed in a sustainable way. They almost exclusively work with natural materials such as cotton, wool, hemp, linen and silk, the only exception being tencel, a sustainably manufactured viscose. Ecological Textiles stands for sustainable production and only uses organic, GOTS certified cotton.

Environmental or social certifications
GOTS-certified.

Garments with this material
Lightweight Wool Shirt, Lightweight Wool Dress.


TENCEL AND POST CONSUMER COTTON WASTE
Supplier Ecological textiles. Origin Netherlands. Production UK.
The most logical, and exciting, next step is to reuse what we already have. To turn ‘waste’ materials into something more luxurious to create a truly a truly circular, restorative system.

Supplier information
Ecological Textiles offers fabrics, yarns and  dyes that are manufactured and processed in a sustainable way. They almost exclusively work with natural materials such as cotton, wool, hemp, linen and silk, the only exception being tencel, a sustainably manufactured viscose. Ecological Textiles stands for sustainable production and only uses organic, GOTS certified cotton.

Environmental or social certifications
GOTS-certified.

Garments with this material
Extra Long Gloves, Knee-High Socks.


ECO BABY WOOL
Supplier Dale Garn. Origin Italy. Production Italy.
100% Organic wool GOTS and ICEA-certified yarn.

Supplier information
Dale Pure ECO is an organic and ethical yarn-concept for people who care about the environment, animal welfare and health.

Environmental or social certifications
GOTS and ICEA-certified.

Garments with this material
High Neck Sweater With Cuffed Sleeves.


CUPRO
Supplier Toyoshima. Origin Japan. Production Japan.
Cupro fiber itself is derived from cotton linter, which is the very fine, soft material that sticks to the cottonseeds and is left behind after the cotton has been ginned. Usually, these fibers are discarded, however, they are now recycled for the production of Cupro. It is a cellulose fiber and has a much more luxurious feel than one would expect from the cotton plant- it drapes beautifully and feels similar to rayon or silk.

We use Cupro in our lining.

Garments with this material
Oversized Alpaca Coat.