100% Wool Socks, IndigoSocks so natural you can compost them. Made from the wool of Bluefaced Leicester sheep, whose wool is known for making good hearty socks, sustainably sourced from small farms across the UK, naturally dyed with fermented Japanese indigo* grown on the Lichen farm, and knit on a hand powered 100 year old manual knitting machine. Each pair of socks is a labor of love, and takes about 4 5 hours to complete. Committed to creating a more circular fiber