Considered to be an “unimproved” variety, the evolution of Shetland sheep has been largely unaided by human intervention. Both a conservation grazer and renewable wool producer, wool from Shetland sheep has a low environmental impact and the refining process is large based on 18th century technology—waterwheel power. The wool is collected from sheep in the Shetland Isles and is processed into yarn in Aberdeenshire, Scotland. The carding process is carried out by 200-year-old cast iron carding sets. The many different colors of wool are blended together to made the “singular” color sweater we sell. While not technically a marled wool, the material is referred to as “unique Shetland”, as is it is unlikely the exact characteristics of the yarn could ever be duplicated. In order to stave off the ravages of the cold, wet Scottish climate Shetland sheep have a coat rich with lanolin and evolved a formidable weight-to-heat ratio. As a result, Shetland wool is soft and warm for the ecologically minded.