Wilderness to weaver. Wool is somewhat of a miracle fabric as it is highly sustainable, renewable, biodegradable, recyclable and flame-resistant. We believe it is the most sustainable fabric out there so that is why we make sure all of our jumpers are always 100% wool. Buy less, and buy better. Fashion is the second biggest polluting industry in the world. We know we're a part of this, and while we do not believe we can ever call ourselves 'sustainable' for producing new products, we intend to do the best we possibly can to improve our sustainability credentials year on year. And so, we encourage you to buy less, and buy better.