These days, organic cotton is a familiar fibre for most of us. It’s grown from organic seeds, which have not been genetically modified in any way. The cultivation process requires no synthetic fertilisers and soil conservation is an important part.

Hemp fibres comes from the hemp plant. This plant requires relatively less water to cultivate and can produce large amounts of fibre per yield. It also releases nutrients back into the land around it. Organic hemp takes this one step further. It’s made from seeds that have not been genetically modified and is created without the use of harmful chemicals or fertilisers.

On average it takes three years for a farm to convert conventional cotton to organic cultivation – during this period, farms follow the same principles of organic farming. With an ambition of supporting more farmers to transition to organic and supporting organic production scaleup, we have introduced in-conversion cotton to our sustainable cotton portfolio.

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We’re proud to source our cashmere through the Good Cashmere Standard by the Aid by Trade Foundation (AbTF). This independent standard works to source traceable, sustainably certified cashmere that cares for the wellbeing of cashmere goats, protects the environment and supports the herders that produce it.

RWS wool is certified according to the Responsible Wool Standard – a voluntary standard within the Textile Exchange that protects the welfare of sheep and the land they graze on.

Mohair certified according to the Responsible Mohair Standard uses fibres from farms where the goats are treated using humane practices and the environment they live in is protected. RMS is a voluntary standard within the Textile Exchange.

RAS alpaca is made using fibres from farms certified according to the Responsible Alpaca Standard. This is a voluntary standard within the Textile Exchange that makes sure the alpacas are treated using humane practices and the land they live in is protected.

Yak wool comes from domestic yak animals, who feed from grass rather than grass root – which reduces their impact on the environment. Sourced from the highest plateau in the world – the Himalayan regions – our traceable yak wool provides transparency at every level of the supply chain.

Lyocell is made from renewable wood sources and best known for its soft, silky feel. TENCEL™ is a trademark of Lenzing AG that makes lyocell even better. These fibres are sourced from certified forests, which guarantees responsible cutting and replanting of the trees. The wood chips are then turned into fibres through a process that recycles 99% of solvents and water instead of releasing them back into the environment.

This is a type of technology that has been designed so recycled fibres can be used to make TENCEL™ Lyocell. REFIBRA™ is a trademark of Lenzing AG, which is made by mixing cotton scraps from production processes and unused clothing with natural wood pulp. This stops good fibres from ending up in landfill – and means fewer natural resources are needed to make new fibres.

Known for its ultra-smooth hand feel and made from sustainably sourced wood pulp, Eastman Naia™ cellulosic fibre is fully traceable and sustainable. It’s produced in a safe, closed-loop process where solvents are recycled back into the system for reuse. The manufacturing process is optimised, too, so it has a low tree-to-fibre carbon and water footprint for minimal impact.

Made from naturally grown Abacá banana plants, Bananatex® is extremely durable with a soft hand feel – perfect for bags and accessories. Cultivated within a natural ecosystem of sustainable forestry, the plants require no pesticides, fertilisers or extra water. The material innovation is Cradle to Cradle Certified® Gold – the most advanced standard globally for products that are safe, circular and responsibly made.

A plant-based material, Desserto® is coated using up to 30% of biomaterials that come from the cactus plant and 70% of water-based polyurethane. Known for its strong and supple feel, you can find this modern material in our bags and accessories collections.

Pieces certified according to the Responsible Down Standard contain down feathers from farms certified to animal welfare requirements. This means that the farms must use practices that respect the humane treatment of ducks and geese. If we are unable to use recycled down, we use RDS as a better alternative to down sourced using more conventional methods.

Recycled cotton is made by converting both pre- and post-consumer fabric into fibres that are then spun into new yarn.

Made by using cutting waste from our own production process, this material gives a new life to COS leftover fabrics.

By recycling cashmere from yarn-spinning waste, yarn overstock and post-consumer garments, we can create completely new pieces without wasting this precious material.

To maximise our use of this precious material, we gather the waste cashmere cuttings from our own production process and convert them into new garments. We have a high standard for the cashmere we use at COS, which means even when it is repurposed, the piece will still have a high-quality look and feel.

Recycled wool is from yarn-spinning waste, yarn overstock, production-cutting waste and post-consumer garments, which is converted into new fibres that are then spun into a new yarn.

Repurposing COS cutting waste is an innovative way to reduce the waste of wool. Since we only use high-quality wool fibres, they can be respun to create a new fabric without compromising on the quality or longevity of the finished piece.

By using recycled nylon, we reduce our demand on limited natural resources and reduce greenhouse gas emissions from manufacturing. Recycled nylon can be sourced from pre- and post-consumer waste – even things like carpets can be made into new clothes.

This is made from recovering nylon waste, such as fishing nets, fabric scraps and carpet flooring. Through a regeneration and purification process, the nylon waste is recovered back to its original purity. This means ECONYL® regenerated nylon is exactly the same as nylon made from fossil fuels and can be recycled again and again, without losing its quality.

The recycled polyester in our collection is made from pre‐ and post‐consumer waste. It’s much better than producing new polyester, which is derived from crude oil – a non‐renewable and increasingly scarce resource. This fabric can also be recycled again and again.

Recycled polyester is known for its down-like properties, retaining heat, even when wet. Made from post-consumer waste, it provides a more sustainable, animal-friendly and down-free alternative to conventional padding.

This modern form of insulation is used in our collection as a more sustainable way to insulate our coats, jackets and winter accessories. It’s made from pre-used down from consumer products, such as bedding and sleeping bags. The down feathers are extracted through a separation and sorting process. They are then washed and sterilised using a chemical-free cleaning method, so they are safe to use again. To make sure the down meets quality standards, it is tested throughout the production process.

Every piece of jewellery within our recycled silver collection has a story to tell. Our sterling silver earrings, necklaces and rings were made by recycling all kinds of objects. Coins, silverware and even old items of jewellery have all been remade into new designs.

Brass is a versatile material that can be recycled a number of times without losing any of the properties we all admire.

Through a repeated heating, cooling and shaping process, broken glass is recycled to create sculptural jewellery within our collection.

Crafted from scrap or post-consumer waste plastic from ex-display stands, optical lenses, water bottles and industrial products, recycled plastic is melted and reformed into new shapes to create pieces in our jewellery and sunglasses collections.

Circulose® is a material made from discarded cotton textiles, such as a pair of old jeans or T-shirt. Using an innovative recycling process powered by 100% renewable energy, these old fabrics are transformed into a new natural material that needs no cotton fields, no oil and no trees.

Investing in new fabrics that are made from old materials is one way that we are taking a step closer to circularity. This reduces the demand on the planet’s natural resources and prevents fabrics from ending up in landfill.

This is a regenerated cellulose fibre, made from cotton linter – tiny cotton fibres that stick out of the cottonseed and are usually too small to spin. Cupro has a smooth hand feel and lustrous sheen that is considered by some as an alternative to silk.

Naia™ Renew is produced from 60% sustainably sourced wood pulp and 40% recycled waste material. This smart solution helps prevent many hard-to-recycle materials from going into a landfill. It easily blends with other fibres and is soft, quick drying and reduces pilling, making it great for use in knitted and woven fabrics.