Yarn is simply ANY long continuous length of interlocked fibres. Most commonly used in crafting. 

'Yarn' also a great word for a story, particularly one told by someone on a cold rainy night by the fire, and weaves in lots of different 'threads'!!

The Orry Mill has a focus on stocking natural fibre yarns, ideally that are sustainable.  However, yarn for hand crafting is often blended to make it easier to work with, to strengthen or give elasticity.  Despite our natural and sustainable approach some of our yarns still have synthetic acrylic blended to give added durability.