Made from our own excess, repurposed cotton is a new yarn that reduces water, energy and land use. This is then blended with longer fibres to ensure long-lasting quality. Giving a new life for leftover fabrics is one of the most pioneering things we’re doing right now.

ReDown® is a planet-friendly form of down padding that we use in our outerwear and accessories. It acts as a highly effective insulator when worn in cooler climates and can be made from all sorts, from pre-loved clothing to bedding and sleeping bags. The fibres are cleaned using sustainable production methods too, including solar energy and water recycling – where wastewater is turned into clean drinking water.

The Responsible Down Standard is a worldwide organisation that protects the wellbeing of animals in the process of making down padding. Using RDS-certified down is one of the most ethical ways of creating the warm padded linings for coats and accessories that we all know – and love – during the cooler months.

Big on comfort, low on waste. By recycling cashmere from production lines and used clothing, we can create completely new garments without wasting this precious material. To ensure long-lasting quality, recycled yarns need to be mixed with high-quality fibres – which there are no shortage of here at COS.

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

Introducing a more sustainable side to softness. This smooth and silky fabric is formed from natural beech wood using a planet-friendly process that’s self-sufficient in energy. Plus, it retains its strength wash after wash – now that’s what we call future proof.

The hemp plant has been used in clothing for thousands of years – and for good reason. It produces a high amount of fibres in a way that benefits the environment its grown in. At COS, we like to use organic hemp made from seeds that have not been genetically modified – and created without the use of harmful chemicals or fertilisers.

TThis material is a COS favourite for two reasons: we can use it to create our sculptural jewellery collections and it can be recycled an infinite amount of times – without losing any of the properties we all admire. Our recycled brass is certified by the Global Recycle Standard (GRS) and Recycled Claim Standard (RCS).

Because the wool fibres we use are premium to start with, this means they can be respun to create a new fabric. If you start with low-quality fibres, it’s much harder to ensure quality – which is why there aren’t many brands our size doing this right now.

Repurposed cashmere is made using the excess from our own production process. This minimises the environmental impact and helps maximise the use of this precious material. Due to the complexity of the process, repurposing cashmere is not that common. We’re proud to be leading the way and starting to close our production loop.

By using recycled nylon, we reduce our demand on limited natural resources. It also uses less energy and fewer chemicals than conventional nylon and contributes less CO2 to the atmosphere. It can be sourced from pre‐consumer waste ‐ even things like fishing nets can be made into new clothes.

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!

Tencel™ is a brand of lyocell, and the only lyocell that is considered sustainable. This natural raw material comes from eucalyptus trees grown in FSC forests ‐ a certification which guarantees responsible felling and replanting of the trees. This wood is then processed in a closed loop process, meaning that 99% of all chemicals and water are recycled instead of being released out into the environment. The result: a beautiful material that’s soft, breathable, washable and hangs elegantly on the body.

Cupro is a plant‐based material that you might not have heard of with incredible properties. It’s made from cotton linter, which are the soft fibres on the plant that are not used and usually go to waste. It’s 100% natural so the material is renewable and biodegradable, as well as soft, silky and breathable like cotton.

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

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 to create new designs with a modern feel.

RWS wool is certified by the Responsible Wool Standard – to protect the welfare of the sheep, the environment they live in and the farmers who take care of them. The wool is ethically sourced, giving animals the freedom to live a happy, carefree life; and natural – with soft, breathable and biodegradable properties.

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.

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