Wool is the snuggly fibre which grows on the backs of our sheep. You’ll sometimes see it tangled up in the brambles of a hedgerow on a springtime walk, or perhaps being swooped up by a bird to insulate its nest for autumn. Every year, around the end of spring, farmers all over the UK shear their sheep - it's like a haircut! Shearing keeps the sheep cool in the warmer months and reduces the risk of parasitic infestation and disease, so it's an important aspect of animal welfare. We then collect up these fleeces and give them a new lease of life in the form of woollen yarn.