BC Garn has 16 GOTS-certified yarns, which are therefore verifiably produced according to strict animal welfare and environmental standards. Furthermore, the GOTS seal guarantees fair wages, occupational safety, good working conditions, and social responsibility. All of this is audited annually.

The traditional Danish company BC Garn was founded in 1972 by Bo Carstensen, who came from a family of weavers. The focus has always been on developing yarns from natural fibers in a wide range of colors. In the spring of 2018, Marianna and Bo handed over their "baby" to the care of Britta and Carsten Kremke, who are continuing the yarn, color, and model range in the tradition of the Danish founders.