Engel is one of the original champions of untreated organic merino wool clothes. The wool comes from Merino sheep kept in their natural environment, organically farmed and therefore living a healthy and stress-free life. The usage of pesticides is forbidden both on pastures and on animals. All of Engel's products are organic (GOTS certfied) and produced in Germany. All the dyestuffs used are free from heavy metals and free from harmful AZO-dyes.