Icelandic wool comes from the unique breed of sheep known as Icelandic sheep. These sheep are well-adapted to the harsh climate of Iceland, producing a wool that is both warm and water-resistant. The wool has two layers: a soft inner layer called thel and a coarser outer layer known as tog, which helps repel moisture. This wool is highly valued for its durability and insulation properties, making it ideal for outdoor clothing and traditional Icelandic sweaters. The unique characteristics of Icelandic wool have made it popular among knitters and outdoor enthusiasts worldwide.